Space News & Blog Articles

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.

Before the advent of computers or even a working theory of the solar system, the ancients predicted solar eclipses. How did they do it?

The bright gibbous Moon this week passes Saturn, then Jupiter, inviting telescopes of all sizes. And as winter approaches, Orion rises earlier and earlier.

The distribution of elements seen in the samples of Ryugu brought back by Hayabusa 2 hints at a wet past.

A mere 200 light-years away, there's a planet with the density of styrofoam and clouds of sand. How did it get so weird?

Jupiter's Great Red Spot may be reaching a milestone this year by shrinking to its smallest size in recorded observational history.

New data provide direct evidence for the existence of atomic oxygen in Venus's upper atmosphere, enabling new science on our sister planet.

New observations have turned up evidence that icy pebbles deliver the water to inner regions of planet-forming disks.

Astronomers are gearing up for an unusual celestial event: an asteroid’s occultation of an iconic star.

The crescent Moon slips down into the sunrise and then up in the afterglow of sunset, guiding the way to the last stars of Sagittarius right after dark. A few days later it passes Saturn.