A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and several years ago he saw something he couldn’t explain. Farnocchia works at ...

A new study uses inversions of orbital gravity and magnetic field data to argue for the presence of ancient, long-lasting hydrothermal systems on Mars.

Jezero Crater on Mars was once home to a lake, delta and rivers. See an animation of what it could have looked like when water poured into the crater billions of years ago and present day. Credit: ...

Scientists have hypothesized since the 1960s that the sun is a source of ingredients that form water on the moon. When a stream of charged particles known as the solar wind smashes into the lunar ...

Perseverance explores Jezero Crater’s rim, uncovering diverse rocks that reveal Mars’ ancient geology and possible signs of ...

Sea ice extent in the Arctic has decreased by about 40 percent since 1979. New technologies are being deployed to regrow it.

How high are sales taxes in your state? Here's the average for all 50 ...

Do aliens actually exist? Read this insightful article to know if they exist, and the theory behind their existence.