Space News & Blog Articles

The pioneering NEOWISE observatory celebrates a milestone, even as the end of the mission draws near.

The waxing Moon passes Saturn, jumps over Jupiter, then jumps the Pleiades. Sirius and Procyon rise earlier, but the Summer Triangle still hangs on.

Look who's visiting this winter in Orion: Vesta, a bright asteroid with a dark side.

New near-infrared observations from the Webb telescope reveal intricate strands of debris from the exploded star.

Polygons buried beneath the surface of Mars indicate an abrupt transition in the planet's early history.

The best meteor shower of the year peaks late Wednesday night. And if you're not positioned to see the tiny asteroid occult Betelgeuse Monday evening, watch by livestream!

Galaxies are embedded within halos of dark matter, and the tilt of those halos can affect the galaxy's stellar halo and stellar disk.

A series of stellar occultations has provided evidence that the ring system around this strange object is evolving drastically.

It’s December and that means one of the best celestial events will grace the skies. The Geminid meteor shower should peak in a moonless sky between Wednesday and Thursday, December 13–14.

An international research collaboration trained computers to sift through millions of images for cosmic treasure.

These moonless evenings open up the deep sky. For many of us the viewing is especially crisp through the low-humidity December air. The Big Dipper lies low, Cassiopeia stands high, and the Andromeda Galaxy crosses the zenith.

This month’s Sky Tour podcast introduces you to a “tower of brilliance” in the eastern evening sky, along with tips for finding four planets and watching mid-December’s impressive Geminid meteor shower.

You'll have five opportunities in the coming months to see Jupiter's moons in interesting alignments.

Salt glaciers on Mercury suggest conditions friendly to life — but not life itself — might once have existed on the innermost planet.

The small object orbiting around main-belt asteroid 5457 Queen’s is the second confirmed asteroid moon discovered during a stellar occultation.

The year's most spectacular meteor shower is upon us. Prepare to enjoy the Geminids under a dark, moonless sky, when you might see more than 100 meteors per hour.

Astronomers have uncovered six sub-Neptune exoplanets dancing in lock-step around the same distant star, shedding light on their formation.

This Tuesday the 28th we will see the Moon rise in twilight as far north as it possibly can. Do you know why?

The International Astronomical Union has named the asteroid provisionally designated as 1993 FE15 after Sky & Telescope's Contributing Editor Gary Seronik: 20046 Seronik.

A brilliant flash of blue light briefly outshined its host galaxy before fading away — but then it exploded again and again, shedding light on the nature of its source.

Observers across much of the U.S. and Canada have a unique opportunity Monday night, November 20–21, to see Uranus's brightest moon occult a star.