Re: Water has been discovered on the Moon.
Escence of Awesomeness;348530 said:
Imagine dropping a match on Jupiter. Since its a gas 'giant', it would be a pretty cool light show. But with the vacuum, yyou realise that Jupiter is why we only get a few meteors, cause it blocks them.
Sorry to act like a know it all, but I fear I must correct these various errors. Jupiter is mostly made up of Helium, which is inert. Ie, not combustable.
Escence of Awesomeness;348530 said:
And there is only one way their could be life on the moon. If it bumped us and took our position.
That would still be impossible. There are two main reasons why the moon would be unable to support life unaided:
1 No atmosphere. Any unprotected human would die of hypoxia within minutes. This also means that the temperature is pretty low, so even if there was a breathing apparatus involved, you'd freeze before you know it. Not to mention the effect the lack of pressure would have on you.
2 Even if the moon had an atmosphere, which would be pretty easy to pull off with terraforming, the moon doesn't have an active core. This might not sound that important, but without a rotating iron core (the moon does have an iron core, but it's stationary), there is no magnetosphere. The Earth's magnetosphere is what keeps the solar radiation away from us. The radiation hit's the magnetosphere, travels along it to the poles, where the radiation ionises in the troposphere, which appears as the various aurora. Without that, we'd find ourselves dying very quickly.
Escence of Awesomeness;348530 said:
Earth is lucky because if it was any closer or further from the sun, even a millimetre away, we would all die.
That is also incorrect. The Earth's position is a lot more flexible than many make it out to be. It is true that we are within the goldilocks zone (it's "just right", get it?) but that zone is pretty wide. I think Mars may even be inside it, or just beyond. I can't recall off the top of my head. Besides, Earth's orbit isn't a perfect circle anyway. It is what's known as an ellipse, which is like a squashed circle. So every year, the Earth's distance from the sun increases and decreases. That's how we get eqinoxes and solstices.