For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

“We find that both exhibit strong linearly increasing trends, coupled with a large surge in magnitude between 330 and 220 ...

Well, the verdict is in. The Moon is not made of green cheese after all.

A NASA mission to observe the activity of the solar wind has returned its first images of giant coronal mass ejections (CMEs) ...

X-class flares are the most energetic class of solar flares, with each step up in number representing a tenfold increase in ...

Summer officially begins in the Northern Hemisphere on June 20 with the summer solstice, the day with the greatest amount of ...

Spurred by rising utility bills, St. Peter’s-San Pedro Episcopal Church in Salem, Mass., looked for alternatives. Its “Heaven ...

Summer arrives for northern observers as the Moon visits Venus, Uranus, and Mercury. Plus: globular cluster M15, double star ...

ESA’s Proba-3 mission has achieved a spacefaring marvel: two satellites flying in perfect formation to mimic total solar ...

Adventure seekers and travelers might argue that summer informally begins with the Memorial Day weekend. Then there's solar ...

West Paducah’s Shawnee Steam & Fossil Plant fired its first coal stack — generating electricity for thousands inside the ...

Just last week, for instance, the Hayden Planetarium at the American Museum of Natural History (AMNH) in New York City ...