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Uranus and Neptune

Solar System

Astronomers Find New Moons of Uranus and Neptune

The three new moons for Uranus and Neptune are each part of a "family," groupings that fragmented from a single parent object.

Gegenschein and Milky Way

Explore the Night with Bob King

Fuzzy Glows: See Zodiacal Light, Gegenschein, Airglow, and Aurorae

Find time this season to set aside your telescope and seek the night sky's ghostly glows.

Impact simulation frame

Solar System

NASA's DART Impact Reshaped the Asteroid Dimorphos

Models of the NASA's DART impact reshaping the asteroid moon Dimorphos show that this object is "rubble all the way down."

Makemake and its moon artwork

Solar System

Webb Telescope Spies Hints That Solar System's Outskirts Are a Hotbed of Activity

The James Webb Space Telescope has found that distant dwarf planets might be methane factories.


Astronomy in Space with David Dickinson

Odysseus Lander Is on the Moon

Odysseus has become the first mission of NASA's Commercial Lunar Payload Services program to soft-land on the Moon.


Space Missions

Japan's Lunar Lander Wakes Up (Again!)

The Japanese space agency has reestablished contact with its SLIM lunar lander prior to sunset, enabling mission science to continue.

Moon with Regulus and Algieba, Feb. 23, 2024

Celestial News & Events

This Week's Sky at a Glance, February 23 – March 3

The full Moon splits the Sickle, the dawn Moon occults Antares, carnivore constellations stand up in the east, and the zodiacal light is at its evening best.

Supernova 1987A (no labels)

Stellar Science

Gotcha: Firm Evidence for a Neutron Star in Supernova 1987A

After decades of debate, James Webb Space Telescope observations provide firm evidence of a neutron star inside the 1987A supernova remnant.

Artist's impression of a black hole surrounded by swirling gas

Black Holes

Most Luminous Quasar Hosts What Might Be Fastest-Growing Black Hole

In a new study, astronomers have identified a quasar more luminous and voracious than any found to date.

Night Sky Sights

Astronomy for "Cloudy, Cloudy Nights"

If you have clouds in your forecast, don't give up! There’s plenty of astronomy to be enjoyed even on overcast nights.

Big and Big Arc portrayed as dots on a sky map


Astronomers Find "Big Ring" 1.3 Billion Light-Years Across

Standard cosmological scenarios might not explain the breadth of a newly discovered cosmic structure.

Moon passing Pleiades and Aldebaran, Feb. 16-17, 2024

Celestial News & Events

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

The Moon waxes from first quarter to full this week, traveling from the Pleiades past the not-quite-twin heads of Gemini to the Sickle of Leo. The Big Dipper and Cassiopeia stand in balance. Venus meets Mars low in the dawn.

Magnetar getting ready to launch an FRB

Stellar Science

Neutron Star "Glitches" Are Clue to Mysterious Radio Bursts

New observations of a neutron star in the Milky Way's center shed light on what makes mysterious fast radio bursts.

Intuitive Machines launch photo

Astronomy in Space with David Dickinson

The Nova-C Lander Launches for the Moon

The second Commercial Lunar Payload Services mission of 2024 IM-1 Nova-C heads Moonward.

Galaxy clusters through time


Largest-ever Catalog of X-ray Sources Tests Cosmology 

Results from a brand-new high-energy observatory are rocking the field of cosmology. In particular, a study of more than 5,000 galaxy clusters relieves tension in the standard cosmological model.

Night Sky Sights

Get to Know the Carina Constellation

The southern constellation Carina contains arguably the best nebula in the sky, along with a host of other fascinating stars and clusters.

Triple stars finders

Explore the Night with Bob King

Winter's Finest Triple Stars

Double stars are wonderful, but triples are terrific! Here are 16 trios to enjoy the next clear night.

Eclipse glasses

People, Places, and Events

How to Do Eclipse Outreach On and Off the Path

One of the best parts about the eclipse coming up on April 8th will be the opportunity to share the joy and amazement with others!

Blue spiral galaxy with golden center


Using Ancient Ultraviolet Light to Probe Theories of Cosmology

By studying the formation and evolution of galaxies in the early universe, researchers seek to test the predictions of our leading theory of cosmology.

Moon passing Pleiades and Aldebaran, Feb. 16-17, 2024

Celestial News & Events

This Week's Sky at a Glance, February 9 – 17

The first-quarter Moon passes the Pleiades, then Aldebaran. Cassiopeia stands on end. For the southern U.S., Canopus culminates far under Sirius.

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