Sky watchers in Washington state will have a lot to look at this month.

Boise nights are getting shorter in June, but they’re still filled with dazzling celestial sights. A planet parade, meteor ...

Three planets, two stars and one moon create a spectacular June sky show.

Scientists found proof that a giant early planet existed in the solar system 4.5 billion years ago.

A short but striking sky show is coming for anyone with a clear view of the horizon. A three-night celestial meetup will unfold from Tuesday, June 16, through Thursday, June 18, when a slender waxing ...

Experts say a calendrical Blue Moon is relatively rare because the moon’s phases last about 29 ½ days, while most months have ...

New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This week’s “planet parade” peaks on Wednesday, Aug. 20, as ...

Looking at the Solar System, Jupiter and Uranus both have plenty of irregular moons. In supercomputer simulations, the ...

Rogue planet moons habitable for 4.3 billion years without any star? A new LMU and Max Planck Institute study shows tidal ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

Californians watching the sky in February have the chance to view a parade of planets and a snow moon. The planetary alignment that began in January will continue into February, according to ...