SUNSET: 
Do Glaciers on Mercury Suggest Such a Planet Could Be Habitable?
Salt glaciers on Mercury suggest conditions friendly to life — but not life itself — might once have existed on the innermost planet.
Amateur Astronomers Discover an Asteroid’s Moon
The small object orbiting around main-belt asteroid 5457 Queen’s is the second confirmed asteroid moon discovered during a stellar occultation.
This Week's Sky at a Glance, November 24 – December 3
This Tuesday the 28th we will see the Moon rise in twilight as far north as it possibly can. Do you know why?
Asteroid Named for Sky & Telescope’s Gary Seronik
The International Astronomical Union has named the asteroid provisionally designated as 1993 FE15 after Sky & Telescope's Consulting Editor Gary Seronik: 20046 Seronik.
Astronomers Find a Brilliant Explosion That Just Keeps On Exploding
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.
How Did the Ancients Predict Eclipses? The Saros Cycle
Before the advent of computers or even a working theory of the solar system, the ancients predicted solar eclipses. How did they do it?
Watch Uranus's Moon Titania Cover a Star Monday Night
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.
This Week's Sky at a Glance, November 17 – 26
The bright gibbous Moon this week passes Saturn, then Jupiter, inviting telescopes of all sizes. And as winter approaches, Orion rises earlier and earlier.
Astronomy in Space with David Dickinson
Samples of Asteroid Ryugu Show Signs of Ancient Water
The distribution of elements seen in the samples of Ryugu brought back by Hayabusa 2 hints at a wet past.
Webb Telescope Peers into Puffy Planet with Clouds of Sand
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?
Explore the Night with Bob King
Jupiter's Great Red Spot Just Keeps Getting Smaller
Jupiter's Great Red Spot may be reaching a milestone this year by shrinking to its smallest size in recorded observational history.
Atomic Oxygen Detected on Venus
New data provide direct evidence for the existence of atomic oxygen in Venus's upper atmosphere, enabling new science on our sister planet.
Webb Shows Planets Really Do Start with Pebbles
New observations have turned up evidence that icy pebbles deliver the water to inner regions of planet-forming disks.
Asteroid Will Cover Betelgeuse, May Reveal Its Visible Surface
Astronomers are gearing up for an unusual celestial event: an asteroid’s occultation of an iconic star.
This Week's Sky at a Glance, November 10 – 19
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.
Webb, Hubble Telescopes Team Up to Create "Most Colorful View of the Universe"
The Hubble and Webb Space Telescopes have revealed a bounty of galaxies in a pair of colliding clusters, capturing twinkling lights within.
Meet Enif, the Nose of Pegasus
Enif, the nose of Pegasus, is a supergiant star and the brightest member of the constellation. Find out more about this star and its place in our skies.
Lucy Mission Flies By Asteroid Dinkinesh, Finds Binary Moon (Updated)
The Lucy mission's flyby of the main-belt asteroid Dinkinesh resulted in a surprise — yet another asteroid moon!
New Cosmology Probe Presents First, Stunning Images
The Horsehead Nebula and other stunning scenes highlight the talents of the just-launched Euclid mission. The telescope will reach into the depths of the cosmos to understand dark matter and dark energy.
This Week's Sky at a Glance, November 3 – 12
The Great Square, now upright, guides your way down to Fomalhaut and Diphda and, farther down, Alpha Phoenicis – a chance to add a new constellation to your life list. And plan to catch the Moon-Venus pairing in early dawn on the 9th.
