Venus, Jupiter and Mercury headline a spectacular month of planetary viewing.

The curious minds at What If explore what would happen if Planet X entered our solar system.

Mars does not have Earth’s kind of magnetic shield, so it has often been treated as the solar system’s more exposed world. It ...

Michelle Obama praises Dave Chappelle as a favorite “IMO” guest at SXSW London. Read what she said about money and courage on ...

A short but striking sky show is coming for anyone with a clear view of the horizon.A three-night celestial meetup will ...

Another puzzle piece in how our solar system formed. The post Scientists Spot What Appears to Be a Ring-Shaped “Planet ...

North America’s celestial highlights for the weekend ahead, which also apply to mid-northern latitudes in the northern ...

Two pairs of ‘rogue’ Jupiter-size, planet-like objects have been found in a large star-forming region in the Milky Way, a new ...

More than 36,000 near-Earth asteroids have been discovered, according to NASA’s Center for Near-Earth Object Studies. The ...

The PIAA boys and girls lacrosse tournaments begin Tuesday, with both Mars teams in the mix. See the full PIAA brackets below ...

Have you seen the bright star in the west after sunset? It’s Venus — and it’s about to do something spectacular. On June 9-11, Earth’s sister planet will appear to tangle with Jupiter in the night sky ...

James Webb Space Telescope reveals weather patterns from how planet WASP-94 A b filters the light of its parent star.