Astronomers spotted a potential Earth-size rocky world orbiting a white dwarf, suggesting a future in which our planet outlives its star.

Sunday's event, known to astronomers as an occultation, is part of a series of such events of the moon engaging with this ...

Prehistoric peoples may have created the world's oldest lunisolar calendar thousands of years ago to mark a calamitous comet ...

Two astronauts — one American, one Russian — are headed to the International Space Station with two empty seats for crewmates ...

From a solar eclipse to a dolphin-like nebula, these winning shots by astrophotographers from around the world depict the ...

What will look like a new star in the sky will actually be a nova — an exploding star, NASA says. Here's how to see it.

The upcoming Full Harvest Moon on Sept. 17 will feature a partial lunar eclipse. Here's what to expect and how to see it.

The fall season officially begins on the calendar this Sunday, with the autumn equinox. For those of us in the northern ...

"Installed in the 100-inch telescope dome at Mount Wilson Observatory, "Of Sea and Sky" connects around themes of ...

Beginning Friday, Oct. 18, Hallmark Channel rings in 15 years of its signature programming event, "Countdown to Christmas," ...

Tornado sirens were activated around 12:30 p.m. in Lansing, Illinois, after a tornado warning was issued by the National ...

Vladimir Putin congratulated Russian school students Yekaterina Churkina, Olga Karasyova, Yegor Ledenyov, Tatyana Migal, Mark Yakovlev, and Dmitry Timofeyev, members of the Russian national team that ...