They’re not a perfect match, but it’s way too hot on the first planet for us to hop over and confirm for ourselves.

Mercury, the closest planet to the Sun, is a world of blazing heat, freezing nights, and endless mysteries. Recent photos ...

The new moon occurs on June 25. A day later, Mercury reaches its highest point in the evening sky, and on June 27, the young ...

Planet Mercury is seen as a small silhouette ... Here’s what you can do to increase your odds of seeing them, according to ...

Learn from astrologers what to expect from Mercury "retroshade," the period that occurs just before and just after Mercury retrograde.

Perpetual Planet Ocean Expeditions is embarking on a series of trailblazing explorations from seashore to seafloor and from pole to pole. National Geographic Explorers will study the global ocean ...

NSW Premier Chris Minns has slammed plans by the City of Sydney to ban gas appliances in all new residential developments as an “overstep” as businesses push back.

A rare planetary parade will align all seven visible planets tonight. Learn the best time, locations, and how to watch this stunning celestial event.

Skywatchers in central Wisconsin can expect a stunning week ahead, with planetary pairings, moon phases and celestial ...

Most meteorites that have reached Earth come from the asteroid belt between Mars and Jupiter. But we have 1,000 or so ...

Mercury doesn't give up its secrets easily. The smallest planet in our solar system is also one of the most extreme—a sun-scorched, metal-rich world with a puzzling magnetic field and lavas ...