Sharpest Images Yet of the Sun's Corona [VIDEOS]
New adaptive optics technology has resulted in the sharpest views yet of the solar corona.
The Milky Way Returns to the Night Sky in a Tide of Starlight
The summertime Milky Way ascends in the east on May nights. Find a dark sky and let it take you away!
Another Dwarf Planet in Our Solar System?
A newly discovered object in the outer solar system, 2017 OF201, is the largest found in more than a decade.
This Week's Sky at a Glance, May 23 – June 1
Have you ever found a hairline crescent Moon as young as 24 hours from new? You get a chance Tuesday after sunset. Mars fades, Jupiter says goodbye, and a globular cluster waits for you in the Keystone.
Barred Spiral Galaxy Discovered in the Early Universe
The discovery of a barred spiral galaxy in a universe just a couple billion years old suggests that galaxies formed and evolved much more quickly than current theories suggest.
Planets Might Abound at the Center of Our Galaxy
The extreme environment at the heart of our galaxy ought to make forming stars and planets difficult, but new estimates show stars (and their planets) have no problems forming there.
The Twisted Path to Unconfounding "Double Star" Messier 40
The story of Messier object No. 40 not only makes for a great yarn, but it also demonstrates the haphazard nature of scientific progress.
Methane Clouds in Motion on Saturn's Moon Titan
Astronomers have watched clouds move in Titan's atmosphere and even observed the chemistry of Saturn's moon in action.
A Pulsar Broke a Magnetic Thread in the Milky Way
Mysterious threads dangle in the Milky Way center, and a pulsar has punched through one of them — providing fresh perspective on the threads' origins.
Meet Boötes, The Herdsman
Spring in the Northern Hemisphere is a prime time to go searching for Boötes, a constellation often referred to as “The Herdsman.”
This Week's Sky at a Glance, May 16 – 25
Jupiter waves goodbye for the season. Mars forsakes Pollux and Castor and heads for Regulus. Saturn and Venus each pair up with the waning crescent Moon at dawn.
Titan Shadow Transit Season Underway
Titan shadow transits are rare, occurring only about every 15 years. Don't miss the chance to see one this observing season.
Wandering Magnetar Has Mysterious Origins
Astronomers who tracked a roaming magnetar for over a decade found that it didn’t originate from a supernova, making its origins an open question.
The Extremely Large Telescope: Our Biggest Eye on the Sky
Sky & Telescope's Govert Schilling visits what will be the world's most powerful optical telescope — the Extremely Large Telescope in Chile.
This Week's Sky at a Glance, May 9 – 18
Every month, the Moon takes four days to cross the sky from Spica to Antares. This week it goes unusually close to each of them.
JWST Sees a Unique Mini-Neptune — the First to Match Predictions
The sub-Neptune TOI-421b is made of much the same stuff as its star — matching predictions, but bucking the trend among other similarly sized planets.
A First-timer’s Trip to the Big Ol’ Texas Star Party
I came for the stars, but I’ll be returning for the people
"Cassini's Bright Spot" Beams at Full Moon
Rayed craters pepper the Moon especially around full. Cassini's Bright Spot is one of the most striking.
Metal Shards Shed Light on the Origin of Asteroid Kalliope
Small relatives of the much-larger Kalliope, a metallic main-belt asteroid shed light on their mutual origin early in solar system history.
Priceless Flares: Magnetars Can Make Gold and Platinum
An almost forgotten observation made 20 years ago provides evidence that magnetars create some of the heaviest nuclei in the universe.
