201–220 of 6,019 results
Galaxy field containing distant quasar and 10 equally distant galaxies

Black Holes

JWST Turns Its Eye on Supermassive Black Holes and the Galaxies That Host Them

The intrepid infrared explorer is offering astronomers a jump back in time, enabling them to see quasars at earlier times than ever before.

Milky Way

Astronomy in Pictures: Saturn and the Milky Way

The James Webb Space Telescope offers a new view of Saturn, while the IceCube Observatory creates a neutrino-painted picture of the Milky Way.

Ophiuchus and Scorpius

Sky Tour Astronomy Podcast

July: Scorpion & Serpent Handler

Count on our monthly Sky Tour podcast to help you get the most out your casual stargazing. It’s a fun and informative way to introduce yourself to the nighttime sky!

Space Missions

Euclid Space Telescope Launches to Explore Dark Energy, Dark Matter

The European Space Agency’s new space telescope promises to unlock a key mystery of modern cosmology.

Venus, Mars and Regulus at dusk, June 30, 2023

Celestial News & Events

This Week's Sky at a Glance, June 30 – July 9

Full Moon in the Teapot. Are the colors of brights easier to discern in moonlight? Twilight? Mars closes in on Regulus as Venus watches. And the supernova in the Pinwheel Galaxy is still 12th magnitude.

X-ray image of galactic center

Black Holes

Milky Way's Central Black Hole Flared 200 Years Ago

A glowing molecular cloud shines today because of a 200-year-old flare let out by our galaxy’s supermassive black hole, scientists say.

Illustration of a supermassive black hole binary system

Black Holes

Gravitational Waves from Supermassive Black Holes Revealed

Radio observatories across the globe have found compelling evidence for the existence of very-low-frequency gravitational waves.

Geminids parent

Solar System

Did an Asteroid's Collision Make the Geminid Meteor Shower?

Parker Solar Probe data offers new insight on the puzzle of how debris from an asteroid produces one of the brightest annual meteor showers.

Captured globulars

Explore the Night with Bob King

See Summer's Best “Gobbled” Globulars

Mergers between the Milky Way and long-ago dwarf galaxies have enriched our skies with dozens of iconic globular clusters. Many are visible in small telescopes.

Artist's illo of airless TRAPPIST-1c and red dwarf star host in background


Exoplanet News: No Air on Venus Twin, Young Jupiter Discovery

Astronomers have discovered Jupiter's younger sibling in a system 88 light-years away. Meanwhile, only 40 light-years away, a Venus-size world turns out to be airless (or nearly so).

Moon passing Spica, June 26-27, 2023

Celestial News & Events

This Week's Sky at a Glance, June 23 – July 3

Venus almost meets Mars in the western twilight, then runs away. Vega and Arcturus become equally balanced across the zenith. Down from Vega hangs the Summer Triangle.

Field of galaxies with spiky


Webb Telescope Tracks Universe's First Light

New results from the James Webb Space Telescope find that radiation from ordinary galaxies cleared the primordial haze left over from the Big Bang, allowing the first light to shine through the early universe.

Astronomy and Society

The Newest and Largest Starlink Satellites Are Also the Faintest

Despite being four times larger than the original Starlink satellites, the new "Mini" version is fainter — as dim as astronomers have recommended such satellites be.


Space Missions

BepiColombo Mission Makes Third Mercury Flyby

The Mercury-bound BepiColombo Mission made its third flyby past the solar system’s innermost world on June 19th.

Artist's impression of AGN

Black Holes

Even Lonely Black Holes Need to Eat

Astronomers have found supermassive black holes in smaller galaxies are actually more likely to light up when they’re isolated in vast, cosmic voids.

C-shape section of E ring with ghostly moon in the middle

Solar System

Phosphates Swim in the Ocean of Saturn's Moon Enceladus

Scientists detected phosphorous in an extraterrestrial ocean for the first time when they analyzed data from Saturn's moon Enceladus.

OJ 287 binary black hole

Black Holes

Signal Found from Supermassive Duo's Second Black Hole

Astronomers have long suspected that a distant quasar harbors not one but two supermassive black holes. They've now detected OJ 287's second black hole.

Moon passing Venus, Mars, and Regulus, June 21-23, 2023

This Week's Sky At a Glance

This Week's Sky at a Glance, June 16 – 25

Venus and Mars are getting closer together in the western dusk. And why does Mars always turn so puny when it approaches Venus? The "Betelgeuse of Summer" is up, and the Little Dipper stands on end.

Smoky sun

Celestial News & Events

Eking Out Observing from under Wildfire Smoke

Smoke from Canadian wildfires has made observing the night sky a challenge for many. Here are some ways you can make the best of a bad situation.

Magnetic field lines on the Sun

Solar System

Parker Solar Probe Detects Source of Solar Wind

The Sun flings charged particles and accompanying magnetic fields into the solar system, but how? NASA's Parker Solar Probe dives in to find out.