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Artist's concept of asteroid passing near Earth, with Earth appearing as a crescent in the background

Solar System

Do Look Up: Asteroid Apophis Will Fly By Earth in Three Years

The close pass of Apophis is nothing to fear. Will you be watching on Friday, April 13, 2029, when this asteroid glides across the sky?

Astronomy & Observing News

Sky & Telescope Reports: New Telescopes and More at NEAF

Sky & Telescope editors made their annual pilgrimage to the Northeast Astronomy Forum to check out new astro-gear and meet up with contributors and readers alike.

Diagram of solar system with new asteroid discoveries noted in light blue

Solar System

Rubin Observatory Announces 11,000 New Asteroids

The Vera C. Rubin Observatory will discover up to 500,000 solar system objects every year. It’s already starting to deliver on that promise.

Thin Moon, Mercurys and Mars extremely low in bright dawn, April 15, 2026

Celestial News & Events

This Week's Sky at a Glance, April 10 – 19

A thin crescent Moon points the way to super-difficult Mercury and Mars low in the dawn, then the opposite crescent plays with bold Venus and the Pleiades in evening twilight.

NEAF 2025 floor

Astronomy & Observing News

Join Us at the 35th Annual Northeast Astronomy Forum

The weekend of April 11–12 marks the return of the world’s largest astronomy and space expo with telescopes, cameras, and activities for the entire family.  

Nighttime view of Earth

Astronomy and Society

Light Pollution Is Increasingly Variable Around the World

Scientists have unveiled a new dynamic view of our world at night, showing for the first time a night-by-night view of changes in light pollution.

Earthset

Space Missions

Amazing Views From Artemis 2’s Historic Lunar Flyby

The Artemis 2 crew set records and provided amazing views — with more to come — as they journeyed around the Moon.

Arcturus and the Bootes Kite rising in the east after dark in early April

Celestial News & Events

This Week's Sky at a Glance, April 3 – 12

Arcturus, the Spring Star, is on its way up in the east. Vega, the Summer Star, rises later in the evening. Jupiter shines high toward the southwest.

Crater edge near lunar south pole

Solar System

Do the Moon’s Poles Hold Less Water Than We Thought?

New observations reveal that permanently shadowed regions at the lunar poles might contain less water ice than astronauts were hoping for.

Night Sky Sights

Dawn Comet C/2025 R3 (PanSTARRS) May Hold a Surprise

If we're lucky, we'll soon have bright comets at both dawn and dusk.

Launch

Space Missions

Artemis 2 Mission Launches for Trip Around the Moon

NASA’s Artemis 2 mission has departed Earth, as humans return to cis-lunar space after more than 50 years.

Astronomy & Observing News

Astronomers Play April Fool’s

From pizza "flavor zones" around stars to therapy sessions for black holes, astronomers are in fine form on this April 1st.

Stellar graveyard graphic for LIGO collaboration's fourth observing run

Black Holes

Have We Found the Black Hole Desert?

Astronomers disagree on whether they’ve found evidence that stars don’t make certain sizes of black hole.

Webb's view of Saturn

Exoplanets

New Astro Images: Saturn, the Crab Nebula, and a Newborn Planet

Striking images from Hubble, Webb, and the Very Large Telescope dive into Saturn's atmosphere, capture the Crab Nebula's expansion, and reveal a newborn planet.

Gemini Jupiter Moon April 22

Night Sky Sights

April Podcast: Spotlight on Gemini

This month’s episode showcases the stars and planets visible on April evenings. We’ll explore full-Moon quirks; spot Venus and Jupiter after sunset; learn about Gemini, the celestial twins; and hunt for meteors toward month’s end. So grab your curiosity, and come along on this month’s Sky Tour.

Diagram of Be star in binary system with white dwarf

Stellar Science

White Dwarf Discovered Gobbling Material from Gamma Cassiopeiae

Powerful X-rays from the nearby naked-eye star Gamma Cas mystified astronomers for decades. Now, a new observatory reveals that they come from its white dwarf companion.

The Winter Hexagon: Sirius to Procyon to Pollux & Castor to Menkalinan & Capella to Aldebaran to Rigel and back to Sirius. As seem late March 2026, with Jupiter.

Celestial News & Events

This Week's Sky at a Glance, March 27 – April 5

Winter's gone, but the Winter Hexagon remains (for now). Trace out this gigantic asterism right after dark before it sinks. Jupiter glares inside its top.

Fragmenting comet

Solar System

Comet Break-Up Caught In Action

The Hubble Space Telescope caught a long-period comet breaking up just after it passed the Sun.

Curiosity selfie

Solar System

Many Waters May Have Mixed on Mars

New analysis shows alkaline and acidic water may have mixed beneath the Martian surface, creating an environment that could theoretically have supported life.

Brown dwarf duo (art)

Astronomy & Observing News

Brown Dwarfs Dance Unexpected Tango

Two brown dwarfs are whipping around each other in a tight tango — an unexpected dance for objects that are not-quite-stars and not-quite-planets.