SUNSET: 
Distorted Galaxy Hints at the Nature of Dark Matter
Astronomers analyzed the gravitationally lensed image of a distant galaxy to test the nature of dark matter.
May: Leo is King in Late Spring
This month’s episode takes you on a guided tour of the key stars and planets that you’ll see on May evenings — a fun and informative way to introduce yourself to the nighttime sky!
Where to Look for Life: Homing in on the Habitable Zone
Scientists are refining the definition of the habitable zone in an effort to aid future efforts at finding life.
This Week's Sky at a Glance, April 28 – May 7
The Arch of Spring across the west enfolds Mars and Venus. Wintry Sirius nears its heliacal setting low in the southwest. The Summer Triangle stars come into view one by one in the east.
Celebrate Astronomy Day This Weekend!
On Saturday, April 29, 2023, come out and celebrate Astronomy Day! Here are some easy ways that you can explore the sky.
Totality “Down Under”
When the Moon’s shadow swept across Earth on April 20th, tens of thousands traveled to Australia, Timor-Leste, and Indonesia to witness the celestial spectacle.
First Image of Black Hole Shadow and Jet Together
For the first time, astronomers have seen how the big plasma jet shot out by a supermassive black hole connects to the material falling into the black hole.
Japanese Mission Attempts Moon Landing, Falls Silent (Update)
The Hakuto R lander, built by Tokyo-based iSpace, was to be a commercial mission to the Moon, but it has yet to phone home on landing day.
This Week's Sky at a Glance, April 21 – 30
The Moon hops past Venus and then Mars. Hydra snakes up, the Pointers point down, and the Arch of Spring spans the west.
Travel Diary: The Skies and Astronomical Sights of Hawai'i
Last March, S&T editor Diana Hannikainen accompanied a group of stargazers to the islands of Hawai'i on an astronomical adventure.
See the Young Moon and the Lyrid Meteor Shower
We have an exciting week ahead with a crescent Moon that might break your observing record followed by a well-timed Lyrid meteor shower.
The DEB Initiative: How Citizen Scientists Can Help Broadcast Eclipses
A citizen-science project aims to broadcast the eclipses coming up this year and next.
The First Black Hole Image, Take Two
A new analysis of Event Horizon Telescope data sharpens our view of the glowing gas encircling the black hole.
Massive Black Hole Duo Spotted at Cosmic Noon
The most distant pair of supermassive black holes discovered offers a unique insight into how galaxies merge.
European JUICE Mission Launches for Jupiter
The European Space Agency’s first dedicated mission to the icy moons of Jupiter has launched successfully.
85,000 Volcanoes Mapped on Venus
A new catalog pinpoints volcanic cones in the best available surface images of Venus – those gathered 30 years ago by NASA’s Magellan spacecraft.
This Week's Sky at a Glance, April 14 – 23
Venus shines with Aldebaran and the Pleiades in late twilight. After sunset on the 20th, try to spot your record-breaking thinnest young Moon. And Leo walks west with a mouse-galaxy dangling from his chin.
What the Discovery of Massive Early Galaxies Could Mean for Cosmology
JWST's detection of early galaxies that are far more massive than astronomers had expected could mean we need to rewrite our understanding of the cosmos.
"Discover the Night" During International Dark Sky Week, April 15–22
Protect the night sky — join the International Dark-Sky Association for activities during International Dark-Sky Week.
Mystery Bursts Give Astronomers a View into Galaxy Halos
Flashes of radio waves — whose exact sources are still a bit of a mystery — are helping astronomers learn about the hot gas that surrounds the Milky Way.
