SUNSET: 
The Hazards of Uncontrolled Reentries from Space
A recent study examines the risk posed to human life by reentering space debris as the number of rocket launches continues to grow.
Vega, the Star at the Center of Everything
While we may quibble about how to pronounce its name, there's no denying that Vega is one of the most fascinating and useful stars in the heavens.
This Week's Sky at a Glance, September 2 – 10
As the Moon waxes from first quarter to full, watch it cross the southernmost zodiac constellations, then pass Saturn and Jupiter. Along the way it occults a Teapot star.
September: Harvest Moon & More
Have you ever looked up at the night sky and tried to figure out what's what? September’s Sky Tour astronomy podcast will heighten your enjoyment of the bright stars and constellations now overhead.
Bright New Satellites Join a Crowded Sky — Here’s How You Can Help
The imminent launch of a BlueWalker satellite, with a giant phased array antenna, portends a brightening night sky. Amateur astronomers can help record these changes with the goal of mitigating them.
Years of Tensions at Mauna Kea May End with Peaceful Negotiations
New stewardship of Mauna Kea, a dormant volcano that hosts some of the world's largest telescopes, could change the face of astronomy at the summit.
Webb Reveals Jupiter, Puffy Planet, and Galactic Maelstroms in a New Light
Round out your week with these stunning views of the universe from the James Webb Space telescope.
NASA's InSight Lander Finds Tropical Mars Is Dry
Evidence for water ice exists at the poles of Mars and even at mid-latitudes, but new evidence shows equatorial Mars is dry. The find has implications for past habitability and future human missions to Mars.
This Week's Sky at a Glance, Aug. 26 – Sept. 3
Scorpius lies down after dark and the Moon walks across it. Jupiter shines high in the southeast by midnight just about as big and bright as it can ever get. An hour or two earlier, Saturn reaches a good observing height.
Betelgeuse's Great Dimming: The Aftermath
The Great Dimming occurred when Betelgeuse coughed out a huge chunk of material, and the ejection took a toll on the giant star.
First Inter-Venusian Asteroid, Named ‘Ayló’chaxnim, Hints at a New Population
The discovery of an asteroid inside Venus's orbit might be the first of a new population within the inner solar system.
Observe Vesta — and Own a Piece of It, Too
Vesta's bright and easy to find in binoculars and maybe even with the naked eye in late summer skies. It's also just as easy to acquire a piece of it without a multi-billion dollar space mission.
Did the Dinosaur-killing Asteroid Have a Sidekick?
The asteroid that wiped out the dinosaurs 66 million years ago might not have arrived alone.
This Week's Sky at a Glance, August 19 – 27
Late these nights, Saturn and Jupiter are about at their very biggest telescopically. Vega passes the zenith, and the Milky Way displays itself in moonless dark.
Peering Up Into Prairie Skies
The Nebraska Star Party offers truly dark skies enjoyed by veteran observers and first-timers alike.
Dusty Disk Discovered in the Twins’ Foot
A careful study of observations spanning decades has revealed that a star in Gemini is regularly eclipsed by a disk-shrouded companion.
Meet Rasalhague, the Star with the Snake
Rasalhague, a star rotating so fast it has squashed itself, has a fascinating connection to the mythology of healing.
How Astronomers Are Rendering the Universe in Sound
Presenting data as sound can open new opportunities for accessibility, engagement, and discovery, but the technique still faces challenges.
This Week's Sky at a Glance, August 12 – 20
Saturn is at opposition, the Perseids contend with moonlight, and once the Moon is gone from the evening sky, the summer Milky Way arches high.
Remembering Donald Machholz, 1952–2022
Sky & Telescope honors the life of Donald Machholz, one of the premier comet-hunters of his time.
