Why Is Life Possible on Earth but Not on Other Planets ... Even if we discover a suitable planet, the challenge of traveling there is enormous. As Nobel prize-winning astrophysicist Michel ...

Why do astronomers look for signs of life on other planets based on how life is on Earth? Couldn’t there be totally different ...

"Even if a planet is in the habitable zone, if it has too small a water inventory, it transitions to an uninhabitable state." ...

Most of us are reserving judgment on whether there is intelligent life on other planets; we haven’t even found bacteria yet, much less a race of aliens with Internet service and takeout food.

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But ...

So scientists are using different methods to see if there is life on planets other than the Earth. Space probes can explore other planets without needing astronauts. Some of the missions ...

They went on to say, 'The evolution of life in space may take a completely different path than on Earth, so there may be habitats other than traditionally habitable planets orbiting stars where ...

There was a beautifully planed off surface ... of us are content to merely imagine the possibilities of finding life on other planets, Dr Allwood would rather not dabble in the imaginary.

There are hundreds of millions of planets around other stars in our Milky Way galaxy ... by scientists as essential in the hunt for life because only planets that are in this zone could ...

But what’s it like on other planets? There are eight planets in our solar ... billion years old and it is about half way through its life. Every object in our Solar System is held in place ...

so that'd likely be the case on other worlds if the life that exists there is similar to life as we know it. "These arid, dry planets, with significantly less than one Earth's ocean of water may ...