The Naked Scientists

The Naked Scientists Forum

Author Topic: Science Photo of the Week  (Read 468580 times)


Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
It takes three to decipher one mystery object

HARVARD-SMITHSONIAN CENTER FOR ASTROPHYSICS NEWS RELEASE

In an exercise that demonstrates the power of a multiwavelength
investigation using diverse facilities, astronomers at the Harvard-
Smithsonian Center for Astrophysics (CfA) have deciphered the true
nature of a mysterious object hiding inside a dark cosmic cloud.
They found that the cloud, once thought to be featureless, contains
 a baby star, or possibly a failed star known as a "brown dwarf,"
that is still forming within its dusty cocoon.







At top left is the optical image of L1014, with
contours of 1.2 mm dust emission, and the field-of-view of the
Spitzer images indicated by the box. The position of young brown
dwarf or protostar (dubbed L1014-IRS) is indicated. At top right is
a 3-color image using the Spitzer data, color-coded by wavelength.
At bottom left is the 8-micron-only image, at bottom middle is a
near-infrared image from the MMT revealing a scattered light nebula
typically seen around young stellar objects, thought to be due to a
cavity evacuated by an outflow. At bottom right is the confirmation
that L1014-IRS drives a bipolar outflow, seen with the Submillimeter
Array. The outflow velocities associate the infrared source with
starless core L1014 at a distance of 200 parsecs, thus confirming
its low luminosity and mass. Credit: Tyler Bourke & Tracy Huard
(CfA)


 
 
Observations indicate that the mystery object has a mass about 25
times that of Jupiter, which would place it squarely in the realm of
brown dwarfs. However, its mass may eventually grow large enough to
qualify it as a small star. The object also is cool and faint,
shining with less than 1/20 the sun's luminosity.

The combined capabilities of Spitzer, the SMA and the MMT were
essential for finding and examining this object. Those facilities
undoubtedly will prove useful in studying similar very dim, very
young objects - objects so young that they are still growing.
 


SOURCE: SPACEFLIGHTNOW.COM


Men are the same as women.... just inside out !!
« Last Edit: 16/10/2005 20:07:21 by neilep »
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Light seen from possibly first objects in universe

NASA-GODDARD NEWS RELEASE


Scientists using NASA's Spitzer Space Telescope say they have
detected light that may be from the earliest objects in the
universe. If confirmed, the observation provides a glimpse of an era
 more than 13 billion years ago when, after the fading embers of the
theorized Big Bang gave way to millions of years of pervasive
darkness, the universe came alive.







The top panel is an image from NASA's Spitzer Space
Telescope of stars and galaxies in the constellation Draco, covering
 about 50 by 100 million light-years (6 to 12 arcminutes). This is
an infrared image showing wavelengths of 3.6 microns, below what the
human eye can detect. The bottom panel is the resulting image after
all the stars, galaxies and artifacts were masked out. The remaining
background has been enhanced to reveal a glow that is not attributed
 to galaxies or stars. This might be the glow of the first stars in
the universe. Credit: NASA/JPL-Caltech/A. Kashlinsky (GSFC)
Download larger image version here


This light could be from the very first stars or perhaps from hot
gas falling into the first black holes. The science team, based at
NASA Goddard Space Flight Center in Greenbelt, Md., describes the
observation as seeing the glow of a distant city at night from an
airplane. The light is too distant and feeble to resolve individual
objects.


"We think we are seeing the collective light from millions of the
first objects to form in the universe," said Dr. Alexander
Kashlinsky, Science Systems and Applications scientist and lead
author on the Nature article that appears in the Nov. 3 issue. "The
objects disappeared eons ago, yet their light is still traveling
across the universe."


SOURCE:SPACEFLIGHTNOw.COM





Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
NASA Telescope Gets Image of Young Stars

This undated infrared image captured by NASA's Spitzer Space
Telescope, released by NASA on Wednesday, Nov. 9, 2005, shows
colossal pillars of cool gas and dust that provide scientists with
an intimate look at the star-forming process. The image reflects a
region in space known as W5, in the constellation Cassiopeia 7,000
light years away, which is dominated by a single massive star. (AP
 Photo/NASA, JPL, CalTech)




SOURCE: Associated Press via Yahoo News



Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
EXHIBIT FEATURES HUMAN SPECIMANS



A healthy human lung, left, and a smokers lung injected with a
polymer preservative are on display during a press preview
of 'Bodies...The Exhibition,' Thursday, Nov. 10, 2005 in New York.
The exhibit which feature 22 whole body specimens, as well as more
 than 260 additional organs and body specimens opens at the South
Street Seaport Nov. 19, 2005. (AP Photo/Mary Altaffer)




A human brain, left, and a cross section of a human brain which
 suffered a massive stroke, injected with a polymer preservative



 A full body human specimen injected with a polymer preservative.



Dr. Roy Glover, Professor Emeritus of Anatomy and Cell Biology at
the University of Michigan and Chief Medical Advisor
for 'Bodies...The Exhibition,' explains the facial tissues on a
human specimen injected with a polymer preservative during a press
preview of the exhibiT.

source: Associated Press vis Yahoo News


Men are the same as women.... just inside out !!
« Last Edit: 15/11/2005 13:51:58 by neilep »
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Giant ape lived alongside humans



Much bigger piccy here

Hamilton, ON– A gigantic ape, measuring about 10 feet tall and
weighing up to 1,200 pounds, co-existed alongside humans, a
 geochronologist at McMaster University has discovered.


Using a high-precision absolute-dating method (techniques involving
electron spin resonance and uranium series), Jack Rink, associate professor of geography and earth sciences at McMaster, has
determined that Gigantopithecus blackii, the largest primate that
ever lived, roamed southeast Asia for nearly a million years before
the species died out 100,000 years ago. This was known as the
Pleistocene period, by which time humans had already existed for a
million years.

Research into Gigantopithecus blackii began in 1935, when the Dutch
paleontologist G.H. von Koenigswald discovered a yellowish molar
among the "dragon bones" for sale in a Hong Kong pharmacy.
Traditional Chinese medicine maintains that dragon bones, basically
fossil bones and teeth, possess curative powers when the fossils are
ground into a fine powder, and ingested.


For nearly 80 years, Gigantopithecus blackii has intrigued
scientists, who have pieced together a description using nothing
more than a handful of teeth and a set of jawbones.


SOURCE: UKMICKYS FAMILY PHOTO ALBUM :)AND EUREKALERT.ORG


Men are the same as women.... just inside out !!
 

Offline Cierra

  • First timers
  • *
  • Posts: 3
    • View Profile
    • http://www.myspace.com/cierraannmarie
Hi guys! This is my first post! I thought these pictures were crrraaaazy! I knew praying mantis eat insects and sometimes each other...but humming birds????




From newbielink:http://www.birdwatchersdigest.com [nonactive]

-Cierra

« Last Edit: 30/11/2005 21:07:49 by Cierra »
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Those Praying mantis photos above are amazing !!!

Herschel sees the Sun
CASSINI PHOTO RELEASE



Credit: NASA/JPL/Space Science Institute
Download larger image version here



Impact-battered Mimas steps in front of Saturn's rings, showing off
its giant 130-kilometer (80-mile) wide crater Herschel.


The illuminated terrain seen here is on the moon's leading
hemisphere. North on Mimas is up and rotated 20 degrees to the left.
 Mimas is 397 kilometers (247 miles) across.


The image was taken in visible green light with the Cassini narrow-
angle camera at a distance of approximately 711,000 kilometers
(442,000 miles) from Mimas and at a Sun-Mimas-spacecraft, or phase,
 angle of 112 degrees. The image scale is 4 kilometers (3 miles) per
pixel.


SOURCE: SPACEFLIGHTNOW.COM



Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
On approach to Dione
CASSINI PHOTO RELEASE




Credit: NASA/JPL/Space Science Institute
Download larger image versionhere



Cassini captured Saturn's moon Dione -- a brilliant, cratered
iceball -- in front of its shadow-draped planet in this picture
 taken during a recent rendezvous by the NASA spacecraft.


The terrain seen here becomes notably darker toward the west, and is
crosscut by the bright, fresh canyons that form wispy markings on
Dione's trailing hemisphere. Dione is 1,126 kilometers (700 miles)
across.


The image was taken in visible light with the Cassini wide-angle
camera at a distance of approximately 24,500 kilometers (15,200
miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of
22 degrees. The image scale is about 2 kilometers (1 mile) per
pixel.


SOURCE: spaceflightnow.com



Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Sharp vision reveals intimacy of stars
EUROPEAN SOUTHERN OBSERVATORY NEWS RELEASE

Using the newly installed AMBER instrument on ESO's Very Large
Telescope Interferometer, which combines the light from two or three
8.2-m Unit Telescopes thereby amounting to observe with a telescope
of 40 to 90 metres in diameter, two international teams of
astronomers observed with unprecedented detail the environment of
two stars. One is a young, still-forming star and the new results
provide useful information on the conditions leading to the creation
of planets. The other is on the contrary a star entering the latest
stages of its life. The astronomers found, in both cases, evidence
for a surrounding disc.






It is amazing to see the amount of details the astronomers could
achieve while observing an object located more than 800 light-years
away and hidden by a large amount of gas and dust. They found the
object to be surrounded by a proto-planetary disc extending to about
 the size of our Solar System, but truncated in his inner part until
about half the distance between the Earth and the Sun. Moreover, the
scientists found the object to be surrounded by an outflowing wind,
the velocity of which increased by a factor 9, from about 70 km/s
near the disc to 600 km/s in the polar regions.

saucy sexy sauces: whipped cream and maple syrup !

sorry...wrong type of source !!...SOURCE: SPACEFLIGHTNOW.COM




Men are the same as women.... just inside out !!
« Last Edit: 05/12/2005 19:30:04 by neilep »
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile

Chandra proves black hole influence is far reaching
CHANDRA X-RAY CENTER NEWS RELEASE


Scientists using NASA's Chandra X-ray Observatory have discovered
evidence of energetic plumes - particles that extend 300,000 light
years into a massive cluster of galaxies. The plumes are due to
explosive venting from the vicinity of a supermassive black hole,
 and they provide dramatic new evidence of the influence a black
hole can have over intergalactic distances.
 

 


An accumulation of 270 hours of Chandra observations
of the central regions of the Perseus galaxy cluster reveals
 evidence of the turmoil that has wracked the cluster for hundreds
 of millions of years. One of the most massive objects in the
 universe, the cluster contains thousands of galaxies immersed in a
 vast cloud of multimillion degree gas with the mass equivalent of
trillions of suns. Credit: NASA/CXC/IoA/A.Fabian et al.

"In relative terms, it is as if a heat source the size of a
fingernail affects the behavior of a region the size of Earth," said
Andrew Fabian of Cambridge University, U.K. Fabian is lead author of
a report on this research that will appear in an upcoming issue of
 the Monthly Notices of the Royal Astronomical Society.


Fabian's group discovered the plumes by studying data from 280 hours
(more than 1 million seconds) of Chandra observations of the Perseus
 cluster, the longest X-ray observation ever taken of a galaxy
cluster. The cluster contains thousands of galaxies immersed in a
vast cloud of multi-million degree gas with the mass equivalent of trillions of suns.


The plumes showed up in the X-ray data as low pressure regions in
the hot gas extending outward from the giant galaxy in the center of
the cluster. The low gas pressure measured in the plumes is likely
the result of the displacement of the gas by bubbles of unseen high-
energy particles.


The bubbles appear to be generated by high-speed jets blasting away
from the vicinity of the giant galaxy's supermassive black hole.
Individual bubbles seen in the inner regions expand and merge to
create vast plumes at larger distances.


"The plumes show that the black hole has been venting for at least
 100 million years, and probably much longer," said co-author Jeremy
 Sanders also of Cambridge University.





SOURCE:SPACEFLIGHTNOW.COM
 






Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Chandra picture shows hot supernova remains
CHANDRA PHOTO RELEASE



Credit: NASA/CXC/Rutgers/J.Hughes et al.

 
 
This false-color Chandra image of a supernova remnant shows X-rays
produced by high-energy particles (blue) and multimillion degree gas
(red/green). In 1006 AD, what was thought to be a "new star"
suddenly appeared in the sky and over the course of a few days
became brighter than the planet Venus.


The supernova of 1006, or SN 1006, may have been the brightest
supernova on record.


We now know that SN 1006 heralded not the appearance of a new star,
 but the cataclysmic death of an old one located about 7,000 light
years from Earth. It was likely a white dwarf star that had been
pulling matter off an orbiting companion star. When the white dwarf
mass exceeded the stability limit (known as the Chandrasekhar
limit), it exploded.


The supernova ejected material at millions of miles per hour,
generating a forward shock wave that raced ahead of the ejecta.
Particles accelerated to extremely high energies by this shock wave
produce the bright blue filaments seen in the upper left and lower
right of the image. Why the bright filaments occur only in the
observed locations and do not encircle the remnant is not
understood. One possibility is that they are due to the orientation
of the interstellar magnetic field which may be roughly
perpendicular to the filaments.


High pressure behind the forward shock wave pushes back on the
supernova ejecta, causing a reverse shock that heats the ejecta to
millions of degrees. The fluffy red features seen throughout the
interior of the remnant are from gas heated by the reverse shock.
The X-ray spectrum of this gas indicates that it is enriched in
oxygen and other elements synthesized by nuclear reactions during
the stellar explosion.


SOURCE: SPACEFLIGHTNOW.COM




Men are the same as women.... just inside out !!
 

Offline DoctorBeaver

  • Naked Science Forum GOD!
  • *******
  • Posts: 12656
  • Thanked: 3 times
  • A stitch in time would have confused Einstein.
    • View Profile
Fascinating pics and info. Well done!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Near-complete Titanosaurus discovered in Argentina

BUENOS AIRES (AFP) - Argentine paleontologists have discovered the
largely intact skeleton of a young titanosaurus that lived 71
 million years ago.



AFP/File Photo:  An Amargasaurus dinosaur, the largest
herbivore to live, discovered in Argentina, seen here in Melbourne,...



"What's extraordinary about this is that the remains were
articulated, as if the animal had fallen or lain down and remained
that way. There were no signs that it was preyed on," local media
reported geologist and paleontologist Bernardo Gonzalez Riga as saying.
Scientists discovered the remains of a foot "with all its toes and
claws in an exceptional state of preservation," as well as the
complete rear bones, tail, "and part of the pelvis," Gonzalez said.

Such finds are rare, said Gonzalez, adding that there are only one
or two titanosauruses in the world with complete feet.
Gonzalez is a professor at Cuyo University, one of two universities
with teams that excavated the remains.
"This now adds to that and brings new data of regional national and
international relevance," he said.
The remains were discovered while German petroleum company
Wintershall Energy was prospecting for oil in Nuequen province,
where many paleontological discoveries have been made.


An initial examination of the remains suggest a small young
titanousaurus about 10 meters (yards) long that weighed about 12
 tons. The giant herbivores, which grew up to 35 meters long, lived
during the late Cretaceous period (83-65 million years ago).
While the skeleton is almost complete from ribs to tale, there is no
sign of the head and neck, which were likely washed away over the
millennia, said Gonzalez.
The fossils were taken to the Lago Barreales Palentological Center
in Neuquen for analysis, the report said.

SOURCE: AFP VIA YAHOO NEWS


Men are the same as women.... just inside out !!
« Last Edit: 01/01/2006 21:20:08 by neilep »
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Nasa team sees explosion on Moon  
 

Nasa scientists have witnessed a rare explosion on the Moon, caused
by a "meteoroid" slamming into it.
The blast was equal in energy to about 70kg of TNT and was seen near
the edge of Mare Imbrium (the Sea of Rains).

The object that hit the Moon was probably part of a shower
of "taurids" which peppered Earth in late October and early
November.

Understanding lunar impacts could help protect astronauts when Nasa
sends humans back to the Moon.

Meteoroids are small rocky or metallic objects in orbit around the
Sun, or another star. One of the astronomers who observed the impact
estimates that it gouged a crater 3m wide and 0.4m deep.

Rob Suggs of Nasa's Marshall Space Flight Center in Huntsville, US,
 was testing a new 10-in telescope and video camera they assembled
to monitor the moon for space strikes
 



Artists impression...though why the explosion should look
like a bunch of tossed daffodils is another mystery !!:)



Here is 2.2mb of meteoriod lunar hitting moon joy !!

http://www.nasa.gov/mov/139981main_impact.mov

Source: An orgy of sources between NASA and BBC

Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
This is down to DRBEAVERS link in his thread about HIV

Study Reveals How Virus Harpoons Your Cells
By Ker Than
LiveScience Staff Writer
posted: 04 January 2006


A three-dimensional model of the HIV virus. Image Courtesy 3DScience.com

Researchers have deciphered the structure of a harpoon-like protein
some viruses use to enter cells and begin infection.


The protein is known as fusion (F) protein and is found on the outer
surface of parainfluenza virus 5, a so-called "enveloped" virus that
fuses its membrane with the membrane of its host cell before
infection.

Once the membranes are fused, the virus dumps its genetic content
into the healthy human cell's interior, hijacking the cell's
replication machinery to clone itself.


Enveloped viruses are responsible for a wide variety of human
diseases, including mumps, measles, HIV, SARS and Ebola. The finding
could help researchers develop drugs that prevent infection by
 blocking viral entry into cells.

The researchers crystallized the F protein and used x-ray
crystallography to determine its three-dimensional structure. Doing
 so revealed a hydrophobic (meaning water-repellant) tip that allows
the viral harpoon to latch on more securely to the cell membrane,
which is also hydrophobic. It also provided researchers with more
insight into the dramatic structural change that the F protein
undergoes while performing its task
When not in use, the F protein looks like a mushroom and its
hydrophobic tip is folded into a compact form, safely hidden inside
the cap. When the virus comes into contact with a target cell, the
cap unfurls and the hydrophobic tip is hurled like a harpoon into
the cell's outer membrane.

The F protein then brings the virus and the cell together so their
two membranes can merge. It does this by collapsing back on itself
like a metal rod bent so that its ends meet.


"The collapse of the protein acts like a hairpin that snaps together
and brings the two membranes together to make them fuse," said
Theodore Jardetzky, a structural biologist from Northwestern
University and the study's principle investigator.


The research, led by Hsien-Sheng Yin of Northwestern University, is
detailed in the Jan. 5 issue of the journal Nature.


SOURCE: DRBEAVER & www.livescience.com


Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Looking down the mouth of an interstellar cavern
GEMINI OBSERVATORY NEWS RELEASE


A storm of billowing clouds blown by the winds from massive stars,
and set aglow by their light, is the focus of a striking image
released by Gemini Observatory.






Gemini Legacy Image of superbubble complex N44 as imaged with GMOS
on the Gemini South Telescope in Chile.  Composite color image by
Traivs Rector, University of Alaska Anchorage
Download larger image version here ...it's worth it..it's a fantastic piccy !
 


Known as the N44 superbubble complex, this cloudy tempest is
dominated by a vast bubble about 325 by 250 light-years across. A
cluster of massive stars inside the cavern has cleared away gas to
form a distinctive mouth-shaped hollow shell. While astronomers do
not agree on exactly how this bubble has evolved for up to the past
10 million years, they do know that the central cluster of massive
 stars is responsible for the cloud's unusual appearance. It is
likely that the explosive death of one or more of the cluster's most
massive and short-lived stars played a key role in the formation of
the large bubble.


One of the mysteries surrounding this object points to the role that
supernova explosions (marking the destruction of the most massive of
the central cluster's stars) could have played in sculpting the
cloud. Philip Massey of Lowell Observatory, who studied this region
along with Oey, adds "When we look at the speed of the gases in this
cloud we find inconsistencies in the size of the bubble and the
expected velocities of the winds from the central cluster of massive
stars. Supernovae, the ages of the central stars, or the orientation
 and shape of the cloud might explain this, but the bottom line is
that there's still lots of exciting science to be done here and
these new images will undoubtedly help."

SOURCE: SPACEFLIGHTNOW.COM



Men are the same as women.... just inside out !!
« Last Edit: 11/01/2006 18:11:00 by neilep »
 

Offline DoctorBeaver

  • Naked Science Forum GOD!
  • *******
  • Posts: 12656
  • Thanked: 3 times
  • A stitch in time would have confused Einstein.
    • View Profile


This kitten was born with only one eye and no nose. Named Cy—short for Cyclopes—it’s shown here in a photo provided by its owner in Redmond, Oregon, on Wednesday, Dec. 28, 2005.
The kitten, a ragdoll breed, died after living for one day. It was one of two in the litter, and its sibling was born normal and healthy.

photo from http://www.livescience.com
Credit: AP Photo/Traci Allen

« Last Edit: 10/01/2006 20:30:48 by DoctorBeaver »
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile

ESA and ANU make space propulsion breakthrough
 
11 January 2006
The European Space Agency and the Australian National University
have successfully tested a new design of spacecraft ion engine that
 dramatically improves performance over present thrusters and marks
a major step forward in space propulsion capability.

 
Ion engines are a form of electric propulsion and work by
accelerating a beam of positively charged particles (or ions) away
from the spacecraft using an electric field. ESA is currently using
electric propulsion on its Moon mission, SMART-1. The new engine is
over ten times more fuel efficient than the one used on SMART-
1. “Using a similar amount of propellant as SMART-1, with the right
power supply, a future spacecraft using our new engine design
wouldn’t just reach the Moon, it would be able to leave the Solar
System entirely,” says Dr Roger Walker of ESA’s Advanced Concepts
Team, Research Fellow in Advanced Propulsion and Technical Manager
of the project.




DS4G thruster firing during tests in the ESTEC Electric Propulsion facility (CORONA vacuum chamber)

Credits: ESA


DS4G thruster firing during tests in the ESTEC Electric Propulsion facility (CORONA vacuum chamber)

Credits: ESA


DS4G thruster firing during tests in the ESTEC Electric Propulsion facility (CORONA vacuum chamber)

Credits: ESA

SOURCE: ESA NEWS



Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
News - heic0601: Hubble panoramic view of Orion Nebula reveals thousands of stars


Bigger one here...it's worth it !

11-Jan-2006: In one of the most detailed astronomical images ever
produced, the NASA/ESA Hubble Space Telescope is offering an
unprecedented look at the Orion Nebula. This turbulent star-
formation region is one of astronomy’s most dramatic and photogenic
celestial objects.



The crisp image reveals a tapestry of star formation, from the dense
 pillars of gas and dust that may be the homes of fledgling stars to
 the hot, young, massive stars that have emerged from their gas-and-
dust cocoons and are shaping the nebula with their powerful
ultraviolet light.


The new picture reveals large-scale structures never seen before,
according to C. Robert O'Dell of Vanderbilt University in Nashville,
 USA "Only with the Hubble Space Telescope can we begin to
understand them," O’Dell said.


In a mosaic containing a billion pixels, Hubble’s Advanced Camera
for Surveys (ACS) uncovered 3,000 stars of various sizes. Some of
them have never been spied in visible light. Some are merely 1/100
the brightness of stars seen previously in the nebula.


Among the stars Hubble spotted are possible young brown dwarfs, the
 first time these objects have been seen in the Orion Nebula in
visible light. Brown dwarfs are so-called "failed stars." These cool
objects are too small to be ordinary stars because they cannot
sustain nuclear fusion in their cores the way our Sun does.


The Hubble Space Telescope also spied for the first time a small
population of possible binary brown dwarfs – two brown dwarfs
orbiting each other. Comparing the characteristics of newborn stars
and brown dwarfs in their natal environment provides unique
information about how they form.

Source: ESA

EXTRA !..thought I'd chuck these extra links to big pictures here (about 2mb each) cos they're bloody bootiful !

http://www.spacetelescope.org/images/large/heic0601h.jpg

http://www.spacetelescope.org/images/large/heic0601g.jpg

http://www.spacetelescope.org/images/large/heic0601e.jpg

http://www.spacetelescope.org/images/large/heic0601d.jpg

http://www.spacetelescope.org/images/large/heic0601c.jpg





Men are the same as women.... just inside out !!
« Last Edit: 11/01/2006 23:28:05 by neilep »
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile

Scientists Discover World's Smallest Fish










BANGKOK, Thailand - Scientists say they have discovered the world's
 smallest known fish in threatened swampland in Indonesia.


The fish, a member of the carp family, has a translucent body and a
 head unprotected by a skeleton.


Mature females grow to less than a third of an inch long. The males
have enlarged pelvic fins and muscles that may be used in
reproduction, researchers wrote in a report published Wednesday by
the Royal Society in London.


"This is one of the strangest fish that I've seen in my whole
career,' said Ralf Britz, a zoologist at the Natural History Museum
in London. "It's tiny, it lives in acid and it has these bizarre
grasping fins. I hope we'll have time to find out more about them
before their habitat disappears completely."


The fish are found in an acidic peat swamp on the Indonesian island
of Sumatra. Indonesian peat swamps are under threat from fires lit
by plantation owners and farmers as well as unchecked development
and farming. Researchers say several populations of the tiny fish,
Paedocypris progenetica, have already been lost, according to the
Natural History Museum.


The previous record for world's smallest fish, according to the
Natural History Museum, was held by a species of Indo-Pacific goby
one-tenth of a millimeter longer.


"You don't wake up in the morning and think, 'Today we will find the
smallest fish in the world,'" Swiss fish expert Maurice Kottelat,
who helped discover the fish, said in a telephone interview from his
home in Switzerland.


According to researchers, the little fish live in dark, tea-colored
water at least 100 times more acidic than rainwater. Such acidic
swamps was once thought to harbor few animals, but recent research
has revealed that they are highly diverse and home to many unique
species.


SOURCE: YAHOO



Men are the same as women.... just inside out !!
 

sharkeyandgeorge

  • Guest


Scientists in Taiwan say they have bred three pigs that "glow in the dark".

They claim that while other researchers have bred partly fluorescent pigs, theirs are the only pigs in the world which are green through and through.

The pigs are transgenic, created by adding genetic material from jellyfish into a normal pig embryo.

The researchers hope the pigs will boost the island's stem cell research, as well as helping with the study of human disease.

The scientists, from National Taiwan University's Department of Animal Science and Technology, say that although the pigs glow, they are otherwise no different from any others.

Taiwan is not claiming a world first. Others have bred partially fluorescent pigs before; but the researchers insist the three pigs they have produced are better. They are the only ones that are green from the inside out. Even their heart and internal organs are green, the researchers say.

To create them, DNA from jellyfish was added to about 265 pig embryos which were implanted in eight different sows. Four of the female pigs became pregnant and three male piglets were born three months ago.

Green generation

In daylight, the researchers say the pigs' eyes, teeth and trotters look green. Their skin has a greenish tinge.

In the dark, shine a blue light on them and they glow torch-light bright.

The scientists will use the transgenic pigs to study human disease. Because the pig's genetic material encodes a protein that shows up as green, it is easy to spot.

So if, for instance, some of its stem cells are injected into another animal, scientists can track how they develop without the need for a biopsy or invasive test.

But creating them has not been easy. Many of the altered embryos failed to develop.

The researchers say they hope the new, green pigs will mate with ordinary female pigs to create a new generation - much greater numbers of transgenic pigs for use in research.



"Defender of the Sea"
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Autonomous underwater vehicle maps ancient Greek shipwreck
After lying hidden for centuries off the coast of Greece, a sunken
4th century B.C. merchant ship and its cargo have been surveyed by
an international team using a robotic underwater vehicle. The team
accomplished in two days what it would take divers years to do. The
project, the first in a new collaboration between US and Greek
researchers, demonstrates the potential of new technology and
imaging capabilities to rapidly advance marine archaeology




This image shows a sample of the data collected by the SeaBed
autonomous underwater vehicle as it swam over the Chios shipwreck in
July 2005. The 3-D color mesh represents a topographic map of the
sea floor, created using data collected by multibeam sonar. The
brown strip shows the area captured in digital images, which were
used to create the photomosaic of the wreck.Image © / Chios 2005
Shipwreck Survey -- WHOI, Hellenic Ministry of Culture: Ephorate of
Underwater Antiquities, Hellenic Center for Marine Research




This photomosaic strip of a section of the Chios
shipwreck site is composed of 14 individual images. The autonomous
 underwater vehicle collected this data in just 42 seconds. Most of
the wreck's visible remains consist of ceramic storage jars (called
amphoras) made on the island of Chios. Archaeologists surmise that
 wine composed the bulk cargo carried aboard the wrecked vessel.
Small, fish, starfish and sponges can also be seen. Image © / Chios
2005 Shipwreck Survey -- WHOI, Hellenic Ministry of Culture:
Ephorate of Underwater Antiquities, Hellenic Center for Marine
Research





Detail from photomosaic strip showing ancient ceramic storage jars
at the Chios shipwreck site. Image © / Chios 2005 Shipwreck Survey --
 WHOI, Hellenic Ministry of Culture: Ephorate of Underwater
Antiquities, Hellenic Center for Marine Research


SOURCE: Eurekaalert.org






Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
PLEASE REMEMBER TO CREDIT THE SOURCE WHEN YOU POST ARTICLES HERE

Men are the same as women.... just inside out !!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
System found where planets may orbit backward
NATIONAL RADIO ASTRONOMY OBSERVATORY NEWS RELEASE

Posted: February 14, 2006

Astronomers studying a disk of material circling a still-forming
 star inside our Galaxy have found a tantalizing result -- the inner
 part of the disk is orbiting the protostar in the opposite
direction from the outer part of the disk.
 




A huge star-forming region is rotating globally in the
direction shown by the white arrow. This large region can give birth
 to multiple stellar systems. Credit: Bill Saxton, NRAO/AUI/NSF



"This is the first time anyone has seen anything like this, and it
means that the process of forming planets from such disks is more
complex than we previously expected," said Anthony Remijan, of the
National Radio Astronomy Observatory, who with his colleague Jan M.
 Hollis, of the NASA Goddard Space Flight Center, used the National
Science Foundation's Very Large Array radio telescope to make the
discovery.


"The solar system that likely will be formed around this star will
include planets orbiting in different directions, unlike our own
solar system in which all the planets orbit the Sun in the same
direction," Hollis explained.


Stars and planets, scientists believe, are formed when giant clouds
of gas and dust collapse. As the cloud collapses, a flattened,
rotating disk of material develops around the young star. This disk
provides the material from which planets form. The disk and the
resulting planets rotate in the same direction as the original
cloud, with the rotation speed increasing closer to the center, much
as a spinning figure skater spins faster when they draw their arms
inward.



If all the material in the star and disk come from the same
prestellar cloud, they all will rotate in the same direction. That
is the case with our own solar system, in which the planets all
orbit the Sun in the same direction as the Sun itself rotates on its
axis.


In the case of a young star some 500 light-years from Earth in the
direction of the constellation Ophiuchus, Remijan and Hollis found
the inner and outer parts of the disk rotating in opposite
directions.


"We think this system may have gotten material from two clouds
instead of one, and the two were rotating in opposite directions,"
Remijan said. There is sufficient material to form planets from both
parts of the disk, he added. The object is in a large, star-forming
region where chaotic motions and eddies in the gas and dust result
in smaller cloudlets that can rotate in different directions.


In the solar system that probably will form around this young star,
the innermost planets will orbit in one direction and the outer
planets will orbit in the opposite direction.


The scientists studied the star-forming clouds by analyzing radio
waves emitted at specific, known frequencies by molecules within the
clouds. Because the molecules emit radio waves at specific
frequencies, shifts in those frequencies caused by motions (called
Doppler Shift) can be measured, revealing the direction in which the
gas is moving relative to Earth.


The newest VLA observations of the region showed the motion of
silicon monoxide (SiO) molecules, which emit radio waves at about 43
GigaHertz (GHz). When the astronomers compared their new VLA
measurements of the motion of SiO molecules close to the young star
with earlier measurements of other molecules farther away from the
protostar, they realized the two were orbiting the star in opposite
directions.


Though this is the first time such a phenomenon has been seen in a
disk around a young star, "Similar structures and dynamics commonly
occur on small and large scales throughout the Universe. Thus, it is
not surprising to find counter-rotation in a protostellar disk since
the phenomenon has been previously reported in the disks of
 galaxies," Hollis said.


The astronomers' report on their results will appear in the April 1
edition of the Astrophysical Journal.

The National Radio Astronomy Observatory is a facility of the
National Science Foundation, operated under cooperative agreement by
Associated Universities, Inc.


SOURCE:SPACEFLIGHTNOW.COM
 


Men are the same as women.... just inside out !!
 

The Naked Scientists Forum


 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums