The Etosha Pan in northern Namibia, the largest salt flat in the country, looks otherworldly in this satellite photo.

For generations, artists and science-fiction writers have imagined alien landscapes beneath twin sunsets. The image became iconic in popular culture long before astronomers confirmed that planets ...

Some scientists believe the sheer number of stars, planets and potentially habitable environments in space makes ...

In ancient mythology, the phoenix was a miraculous bird with a cyclical pattern of life and death, perishing in flames only ...

There is no chance in hell our species will be able to reach another Earth-like planet in the Universe in the foreseeable future, so the only way we can get a sense of the habitability of such places ...

Honeycomb: The World Beyond impresses in the test with genuine genetic research, but completely forgoes violence and a co-op ...

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...