Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

Everyone's favorite dwarf planet, Pluto, was discovered just 95 years ago. Here's the story of how the once-ninth planet was ...

Venus—a hot planet pocked with tens of thousands of volcanoes—may be even more geologically active near its surface than ...

Future missions to Venus could also supply additional data on the density and temperature of the planet's crust, which could ...

Plus: long beaded necklaces, a floral designer’s book of unusual arrangements and more recommendations from T Magazine.

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As well as that, April on Pluto is a month-long celebration of Earth Day, with the streamer releasing a bunch of breathtaking ...

Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.

CLEVELAND, Ohio — Watching Ben Lively, I keep thinking, “I grew up with pitchers like this.” I’m talking about the 1960s and 1970s. Yes, there were hard-throwers such as Sudden Sam ...

Heather Ranck will return to the job she lost after making a whistleblower complaint against a higher-ranking federal ...