Physics, Astronomy & Cosmology

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Subject	Started by	Replies / Views	Last post
We want your space/astronomy pictures!	BenV « 1 2 »	44 Replies 19909 Views	18/03/2013 17:20:00 by imatfaal
The truth is out there, in pictures.	paul.fr « 1 2 3 ... 5 »	108 Replies 89553 Views	20/04/2011 10:37:12 by ratifying
Causality is it violated by quantum entanglement?	Alan McDougall	0 Replies 2 Views	Today at 17:40:54 by Alan McDougall
The expression "A moment in time" does it exist in physics?	Alan McDougall	0 Replies 1 Views	Today at 17:29:47 by Alan McDougall
Should the older Universe appear smaller?	dan@frankdan.com	6 Replies 697 Views	Today at 16:40:12 by Alan McDougall
What is your interpretation of quantum mechanics?	HellsMascot « 1 2 3 ... 6 »	127 Replies 5113 Views	Today at 14:41:59 by JP
How did the big bang happen? How can it come from nothing?	thedoc « 1 2 3 4 »	91 Replies 3539 Views	Today at 08:37:01 by Pr. snoerkel
Has the speed of light changed since the Big Bang?	Fluid_thinker	2 Replies 564 Views	18/06/2013 16:25:34 by syhprum
Do we know exactly what time is?	Alan McDougall	1 Replies 25 Views	18/06/2013 16:03:03 by yor_on
Why does measuring a particles make its wave-function collapse?	Alan McDougall	0 Replies 16 Views	18/06/2013 15:59:35 by Alan McDougall
How can jets issue from Black Holes if even light cannot escape?	thedoc	9 Replies 250 Views	18/06/2013 08:13:07 by Soul Surfer
How would an entity on a neutron star observe the outside universe/reverse	Alan McDougall	3 Replies 79 Views	17/06/2013 14:44:14 by Alan McDougall
Math / Science Radio Stations?	syntheticlight	4 Replies 2214 Views	17/06/2013 11:52:29 by evan_au
contacting the little green men	acecharly	9 Replies 149 Views	15/06/2013 12:13:45 by syhprum
whats the other side of the milkyway ?	acecharly	5 Replies 435 Views	15/06/2013 09:56:32 by evan_au
How can fibre optics send data further with lower losses?	thedoc	9 Replies 1000 Views	13/06/2013 21:39:35 by evan_au
What triggered a huge explosion in Siberia in 1908?	thedoc	0 Replies 67 Views	17/06/2013 13:02:45 by thedoc
A question on time	acecharly	9 Replies 274 Views	13/06/2013 13:54:43 by yor_on
Why no massive object can move at c?	Vorador	13 Replies 995 Views	11/06/2013 16:00:44 by JP
How are prime numbers used in biology, e.g. by cicadas?	cheryl j	2 Replies 717 Views	10/06/2013 12:13:01 by evan_au
What causes the force on a firefighter's hose?	PAOLO137 « 1 2 »	25 Replies 3462 Views	08/06/2013 13:25:47 by PAOLO137
Tricky V I EMF Graph Need help please	Manager123	2 Replies 773 Views	08/06/2013 10:11:54 by syhprum
Does the sun appear to move faster at sunrise and sunset compared to midday?	AntonMaeso	22 Replies 1441 Views	06/06/2013 21:07:22 by damocles
In the Equation E=MC2, was the speed of light selected as a constant?	Joe L. Ogan	9 Replies 1176 Views	06/06/2013 18:09:22 by JP
how bigger point of gravitational lensing could there be?	acecharly	2 Replies 431 Views	06/06/2013 09:11:31 by evan_au
Entropy, Space, Time... before the big bang and now?	Europan Ocean	2 Replies 423 Views	05/06/2013 23:28:13 by yor_on
How fast do electrons move in a current-carrying wire?	colarris	6 Replies 1126 Views	05/06/2013 20:36:41 by damocles
Would the Time Dilation effect enable us to perform infinite calculations?	CosmosCranium	2 Replies 881 Views	05/06/2013 11:32:58 by evan_au
what is a shockwave made of ?	acecharly	5 Replies 896 Views	04/06/2013 18:22:04 by distimpson
Could there be two sides to our universe?	acecharly	0 Replies 852 Views	03/06/2013 13:08:22 by acecharly

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