One reason is if it is because the Planet is too hot or cold to support water for life.
because they cant support life. They don't have the right atmosphere or the right temperatures. Hopefully they discover a planet that will be able to support life.
So far as we know none of the planets in the solar system are able to support plants as we know them on earth.
Not much is known about life on other planets - and especially about planets around other solar system. To support life AS WE KNOW IT, the planet would also have to have a similar atmosphere, and availability of water, among other things.
Well, apparently, none of the planets has a combination of atmosphere, range of temperature, magnetosphere shield, surface heat distribution, gravitational field, music, natural resources, women, and a few other things, that is able to support life.
they arent
Some people believe that spaceships from other planets have visited Earth, but no one has ever been able to prove it.
Both new planets and stars are being formed. Scientists are actually watching the formation of planets and keeping track of which ones would be able to support life.
We can see mars and other planets at night as it is very dark.
because if the planets were close enough to each other to be able to have a gravitational pull strong enough to share rings, the planets would ultimately collide
Like our Moon, other planets can also reflect light from our Sun.
is there life other than ours? are there any other earth like planets in the universe
We are able to see the Moon, other Planets and even the Sun. The Sun make this possible through its light, even at night. With the help of a powerful telescope we are able to see distant galaxies, distant stars that don't exist anymore, we are seeing only its light which is still travelling.