Neptune was supposed to be the quiet, distant ice giant, a cold blue marble barely warmed by the Sun. Instead, the James Webb Space Telescope has just turned it into one of the strangest, most ...

Binoculars or small telescopes easily show double stars and star clusters. Several planets are visible this week, some with moons or other celestial neighbors. The changing position of planets and the ...

Tonight the sky is staging a compact, graceful performance: a slender crescent moon sliding in beside Saturn, with distant Neptune completing a rare triple alignment. For a few hours after sunset and ...

This article first appeared on Wired.com. On August 10, six planets — Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune — will line up in an arc in the night sky. Four of these planets — Mercury, ...