One of the oldest unsolved riddles in planetary science concerns the origin of the moon. Over a century ago, George Darwin ...

Up to 150 Geminid meteors may brighten the night sky each hour as the shower hits its peak on Dec. 13-14, according to the ...

Jupiter, the giant of our Solar System, hosts nearly 100 moons. Discover some of Jupiter moons with unique characteristics to explore.

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The waning moon shines close to the king of the planets on Dec. 7. Don't miss Jupiter shining close to the waning gibbous ...

Far from being quiet, frozen backwaters, the icy moons of the outer solar system are starting to look like some of the most ...

Searching for exomoons—moons that orbit around another planet—was one of the most exciting capabilities expected of the James ...

The primary observational focus is Jupiter, featuring a transit of its moon Ganymede and its associated shadow. Prior to the transit, Ganymede and Europa will execute a close alignment and pass east ...

A clear night often pulls our eyes skyward. Many wonder what worlds shine beyond our own Moon. Scientists now highlight eight stunning moons that reshape our view of the Solar System. Each moon holds ...

Sky This Week is brought to you in part by Celestron. Friday, November 28 First Quarter Moon occurs at 1:59 A.M. EST. While Luna is not visible in the morning, our satellite will grace the evening sky ...

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