« on: 18/11/2020 08:45:53 »
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you don't know anything about Jesus except via the writings of those " creedalists who heard the Gospel only in latin".As I understand it, the Gospel writings attributed to Matthew, Mark, Luke and John were originally written in Greek. Greek copies exist, and are used for modern translations of the Bible.
The Earth's sky without Ozone would not have been blue?The ozone is not a major factor in the colour of the sky.
What would moon have looked like from Earth on a clear evening, 4 billion years ago? Was that not shortly before life formed on Earth?Exact dates for both are not known, but it seems if life was barely there before the Theia event, that event would not have been kind to it. Maybe.. Life in general is impossibly resilient, and if such an impact should happen today, life would most likely survive it. Maybe life came from Theia itself. Think about it.
It would have been extremely close! Immediately after it's formation from the Thea collision it must have resolved to a closest orbit, and moved away over time due to tides over millions of years?The third of Kryptid's links gives distances, but oddly enough, not length of day or month. I've heard the day would have been around 10 hours (and will be again if the sun can be prevented from swallowing us before then). The calculations can be done with conservation of angular momentum laws.
At 4 billion years ago say 200 million years into it's life, the moon also had an atmosphere, coming from it's rocks and craters and internal sourced gases. What were those gases and what colours would they have been? And they would have been blowing in the solar wind, right? Under a dimmer colder sun?Solar wind might have blown that atmosphere away almost as fast as it was emitted from the rocks. Unclear if any appreciable pressure ever built up, but your subsequent link says yes, perhaps around 1% Earth's current pressure.
The Earth at this time along the equator, would not have had any land not swept over by the tide during the week?Oceans took a long time to form after the Theia event. Don't think tides ever swept clean over the continents.
How many hours would a lunar orbit have taken back then?Right after the moon formed, less than a day. Several hundred million years later, maybe 4 days.
The point of centre of the two objects rotating would have been inside the Earth's diameter?It still is, about 75% of the way to the surface. Yes, it would have been deeper in back then.
Centrifugal forces would not have balanced out like with the Sun's gravity and the Earth's orbit? Or is there a solar tide?Don't know what you mean by centrifugal forces balancing out. I think the moon's acceleration on Earth might have been as strong that that of the sun at some point. It isn't close anymore. The Earth always accelerates towards the sun even when the moon is full, pulling hardest in the opposite direction. Yes, there have always been solar tides. You're very aware of them if you live at sea level.
What is the nature of dark matter around a black hole? Does it fall in? Is there dark matter in black holes? Is it repelled?If it (a specific bit of it) is aimed quite perfectly, it will fall in. More likely it picks up speed as it falls and exits the system similar to the way a comet leaves. Maybe it orbits, or maybe it moves too fast to orbit.
If Proxima b is bigger than the earth, it may have a bigger magnetosphere, could this trap water?The size of a planet has nothing to do with its magnetic field, which is generated by its spinning core. One of the issues with orbiting so close to the star is that the planet is going to be tidally locked so that it rotation and orbit have the same period. Since Proxima b takes about 11 days to orbit, it would also take 11 days to rotate. The slower rotation doesn't bode well for generating a strong field.
We can compare Mercury and Venus, the latter is close to the Sun and has a very thick atmosphere. Smaller than the Earth, yet inside maybe more Iron?
Can mass ejection from a remote supernova reach the Earth?In one sense, the heavy elements making up the Earth were created in a series of supernova events. So yes, the mass ejected from remote supernova has reached the Earth, about 5 billion years ago.
The remnant of the star is called the crab nebula, it is 6,500 light years away and was recorded as a supernova in 1054 by Chinese astronomers.For remnants of the crab nebula to have reached Earth by 2017, the debris would have had to travel at 85% of the speed of light.
...our nearest star. I read it is a red dwarf with small rock planets in the habitable zone that contain water. After the red giant phase...Proxima Centauri is a red dwarf because it has a very low mass - about 1/8 the mass of the Sun. This means Proxima is burning its hydrogen fuel very slowly, and it will still be glowing long after the Sun has passed the red giant phase and turned into a dark cinder.