Our sun is not expected to burn out for another 5 billion years (it's already about 5 billion years old). But 2 billion years from now, our galaxy will collide with its neighbor. Suns and stars will be tossed around everywhere as the two galaxy becomes one.
http://haydenplanetarium.org/resources/ava/page/index.php?file=G0601andmilwy
2006-11-10 14:06:18 · 10 answers · asked by Kitiany 5 in Science & Mathematics ➔ Astronomy & Space
Galaxies are mostly empty space. There is so much space between the Sun and the other stars that when both galaxies collide, there probably will be few actual stars smacking into each other. What happens though with collisions between galaxies is that gravity will bend the colliding galaxies out of shape, or pull them both together so they form a giant "super-galaxy". Those big clouds of gas and dust that float around our galaxy can collide though, triggering massive star formation. That might be something to worry about because those new stars could give off massive amounts of radiation. Even so it only is a problem if we're in the wrong place at the wrong time. So our sun will probably be fine.
2006-11-10 14:13:41 · answer #1 · answered by Roman Soldier 5 · 7⤊ 2⤋
> So why just directly to us ? its like so far away... is it magnet or something ? Not magnetism: gravity. Simple gravitational attraction. > Is planet earth and the people are prepared or are we dont care and just let the (life) be non exsist and distroy impact ? We're talking about an event 3 million years in the future. I doubt anything much like current humanity will still exist at that distant point. After all, three million years, our biological ancestors, the early hominids, barely existed, and hadn't started evolving towards modern man. Who knows what we may have evolved into 3 million years hence. Secondly, is nothing expected to happen to life on Earth as a result of this "impact." The stars in galaxies are few and far between, and galaxies in collision simply pass through each other without any effect on the component stars. Our Milky Way galaxy is currently in collision with two smaller galaxies; have you noticed?
2016-05-22 04:10:07 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The biggest danger will be the black hole at the center of Andromeda. Its very unlikely the two black holes will collide but instead start orbiting each other and any stars anywhere near being in the way will be destroyed or ejected into inter-galactic space. Another danger is the Andromeda gas and dust clouds that could engulf our solar system reducing the amount of sun light reaching the earth resulting in a catastrophic freeze. It will probably be the end one way or the other but humans will be long gone.
2006-11-10 16:18:42 · answer #3 · answered by Michael da Man 6 · 1⤊ 0⤋
The sun may not burn out for 5 billion years, but its energy output will have changed to a point where it can no longer supply life on Earth well before we crash into the Andromeda.
Until then we've got plenty of time to develop the technology needed to colonize other worlds. The only threat we have is ourselves. Can we survive the next decade without killing each other?
2006-11-10 19:52:54 · answer #4 · answered by Ellis26 3 · 1⤊ 0⤋
http://en.wikipedia.org/wiki/Andromeda_GalaxyGeneral_information
the milky way and andromeda are approaching at 100 to 140 km/s, but this is only the radial velocity. the tangential velocity is unknown so the two may not collide. the two may be orbiting and approaching periapsis.
if the two do collide and merge then it may be in three billion years. the earth will be unrecognizable and unlivable in one billion years because it will become too hot and dry. the sun will have already expanded too much.
2006-11-10 16:16:41 · answer #5 · answered by warm soapy water 5 · 1⤊ 0⤋
first of all, it is very very unlikly to collide with Andromeda
secondly, if Milky Way did collide with Andromeda, not that many collisions will occur because galaxies are mostly empty space
2006-11-10 14:45:50 · answer #6 · answered by Rajan 3 · 2⤊ 0⤋
I watch this in NOVA, it say when galaxy collide, nothing lives, since that every galaxy have a black hole in the middle. so bascially earth will be wiped out
2006-11-10 14:11:34 · answer #7 · answered by Andrew 4 · 2⤊ 3⤋
it is highly unlikely that our galaxy will collide, especially since the universe is expanding and they are moving apart
2006-11-10 14:13:55 · answer #8 · answered by Texan Pete 3 · 0⤊ 4⤋
it will have no life on it by that time, so the planet will disintegrate
2006-11-10 14:14:20 · answer #9 · answered by michael m 6 · 0⤊ 4⤋
it will not survive.
2006-11-10 14:11:50 · answer #10 · answered by Anonymous · 1⤊ 2⤋