"Without Mars, Earth's orbit would be missing major climate cycles. What would humans and other animals even look like if ...

NASA has temporarily stopped part of its investigation into possible signs of life on a faraway planet, after two years of ...

If aliens from space can die and mourn their dead then they likely invented gods to worship. Because they missed their loved ...

Earth is home to creatures so strange, beautiful, and bizarre that it’s easy to forget we share the planet with them. These ...

Need a reminder of what's up in the farthest frontier of 'Star Trek' before 'Starfleet Academy'? Class is now in session.

Within a few dozen light years of the Sun, the sky is crowded with stars that could, in principle, host living worlds. I want ...

Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...