1–20 of 5,163 results
two colorful radio gets stream out either side of a central, invisible point

Black Holes

From Starving Black Holes to Warped Galaxies

Hot topics from the American Astronomical Society summer meeting range from colliding galaxies, to warped galaxies, to starving black holes.

wo spiral galaxies appear as light colored swirls on either side of an orange star.


Astronomers Look into the Past of Local Dwarf Galaxies

A combination of simulations and observations indicates that galaxies like the Large Magellanic Cloud control when punier dwarfs plunge into large galaxies.

Zhurong selfie

Solar System

China’s Zhurong Rover Snaps Selfie on Mars

China's Zhurong rover gets to work exploring Mars, with a new panorama of its landing site.

Red nova

Variable Stars

Bright Nova in Hercules on a Roller Coaster Ride

A new bright nova discovered in Hercules at 8th magnitude briefly rose to naked-eye visibility. It's currently easily visible in a pair of binoculars.


Stellar Science

Number of Known Mysterious Radio Flashes Nearly Quadruples

The CHIME telescope has released its first catalog with 492 unique sources of fast radio bursts, the brief flashes of radio waves that have been intriguing astronomers over the past decade.

Explore the Night with Bob King

Chasing the Sun at 39,000 Feet

Sky & Telescope's annular-eclipse flight chased down the "ring of fire" eclipse in the skies above Canada for breathtaking views.

Moon, Mars, Venus in twilight, June 11-12, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, June 11 – 19

The crescent Moon passes Venus, Pollux, Castor, and Mars in the evening twilight. The Big Dipper hangs down; the Little Dipper floats up. And greet the "Betelgeuse of summer."


Not All Star-forming Clouds Are The Same

Astronomers have created the first high-resolution maps of the big, dense gas clouds that form stars within galaxies.

Temple of the Moon


Plan Ahead for the 2023 Annular Solar Eclipse — and a Visit to Dark Sky Parks

If today’s solar eclipse has you wondering when the next one will cross the continent, start planning now for a stellar trip around October 14, 2023.

Annular eclipse

Celestial News & Events

A Sunrise Annular Solar Eclipse

Even if you're not in the path of annularity during the June 10th solar eclipse, get ready for a sunrise spectacle.

close up of corner of jupiter with gaynmede in background

Astronomy & Observing News

Juno’s Ganymede Flyby: A Look Back [Update: New Images]

NASA's Juno will fly by Jupiter's Ganymede, the biggest moon in the solar system, on June 7, 2021. This will be the eighth flyby of the space age.


Spacecraft and Space Missions

We're Heading to Venus! NASA Selects Discovery-class Missions

After a hiatus of several decades, NASA is about to return to Venus in a big way.

Mars, Pollux, Castor in twilight, early June 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, June 4 – 12

Pollux and Castor slide down past Mars in the west, while Venus, shining brightly below, tries to hog attention. On the other side of the sky, the enormous arch of the Milky Way hoves into view after dark behind the Summer Triangle.

Neutron star mergers produce r-process elements

Stellar Science

Metal-poor Stars Shed Light on the Origin of Gold

Explosions of massive stars might have produced gold and other rare heavy elements observed in metal-poor stars in our galaxy’s halo.

Astronomy & Observing News

Orion Telescopes & Binoculars Purchases Meade Instruments

Orion Telescopes & Binoculars has acquired the famous telescope manufacturer Meade.

Moon Venus Mars on June 11-13, 2021

Sky Tour Astronomy Podcast

June: Solar Eclipse & Colorful Stars

June features long days and short nights in the Northern Hemisphere, so download our narrated Sky Tour astronomy podcast to make the most of the abbreviated dark hours after sunset. Special event: a partial solar eclipse on June 10th!

Galactic center

Solar System

Astronomy in Pictures: Unraveling Galaxies and Clyde's Spot

This week in astronomy pictures: Peer into our galaxy's busy core, watch Clyde's Spot unravel at Jupiter, and see a stunning Hubble photo of a lopsided galaxy.

Venus-Mercury conjunction at dusk, May 28, 2021

Celestial News & Events

This Week's Sky at a Glance, May 28 – June 5

Venus and Mercury conjoin in the post-sunset afterglow as Mercury fades away; bring binoculars! Arcturus stands over Spica. The Scorpion rears up, and the Big Dipper floats on high.

Dark Energy Survey


Dark Energy Survey Catalogs 226 Million Galaxies

The latest release from the Dark Energy Survey catalogs millions of galaxies, mapping the history of galaxy clustering across space and time.

Night Sky Sights

Meet Gacrux, the Top of the Cross

Gacrux is a treat for southern observers — the closest red giant to Earth and the tip of the famous Southern Cross.

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