A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Earth is home to some truly bizarre and breathtaking landscapes — here are 20 that look straight out of an alien world.

But how well do you really know our planetary neighbor? This quiz of 15 questions will test your knowledge of Mars' size, surface and history, as well as scientists' attempts to study it. Remember to ...

Collaboration has achieved the highest-resolution Earth-based observations to date, detecting light at 345 GHz from the ...

Thank you for reporting this station. We will review the data in question. You are about to report this weather station for bad data. Please select the information that is incorrect.