Mercury spill closes Sunspot Solar Observatory and nearby forest trails indefinitely, though officials say there is no public ...

Solar wind sounds poetic, but it's a very real and powerful phenomenon, connecting the Sun to every part of our solar system. Unlike the wind we feel .

The smallest planet in our Solar System may be hiding a big secret. Curious bright streaks on Mercury's surface, doodled on its craters and slopes, are probably a sign of very recent geological ...

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of ...

Although Mercury was geologically active in its early days, today its surface appears almost completely static. This is why ...

Mercury has long been cast as the solar system’s burnout case, a small rocky world that cooled quickly and then froze in ...

An analysis of 100,000 satellite images of Mercury has revealed traces of changes that challenge the image of a "dead" planet.

Glance over your best 8 friends in your personal Solar System ...

Snapchat, the popular messaging app known for self-deleting messages and fun chat features, also offers a paid plan called ...

Learn more about whether Mercury Systems, Inc. or Redwire Corporation is a better investment based on AAII's A+ Investor grades, which compare both companies' key financial metrics.

It’s a cosmic season in Southern California; look for the unveiling of Griffith Observatory’s Celestial Globe, too.

February brings a Leo Full Moon, Aquarius Solar Eclipse, Mercury retrograde, and Saturn in Aries. Here’s what each zodiac ...