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M94

Galaxies

Life and Death in Nearby Galaxies

New images of nearby galaxies and their surroundings reveal details in galactic formation and evolution — and puzzles that remain to be solved.

Gaia visualization of Milky Way

Spacecraft and Space Missions

The Gaia Revolution: New Data and Strange Stars

Astronomers will use the newest data release from the Gaia mission to explore stellar tsunamis, Milky Way history, and more.

Stellar Science

An Unusual Source Deepens Fast Radio Burst Mysteries

A new source of fast radio bursts raises questions about how much we really know about these mysterious flares.

solar flare

Solar System

The Sun Is Waking Up — Right On Schedule

The Sun is ramping up activity, but contrary to some reports, this solar cycle is still consistent with scientists' predictions.

Artist's illustration of pulsar Geminga

Astronomy & Observing News

Seeing Inside a Cosmic Superaccelerator

Astronomers are exploring a celestial particle accelerator in the Eel Nebula that surrounds a distant pulsar.

Nova illustration

Stellar Science

Astronomers Watched a White Dwarf Turn into a Thermonuclear Fireball

Astronomers have spotted the X-ray flash that precedes a nova. The brief flare is the first sign of a white dwarf erupting into a nuclear-fusion fireball.

Hickson Compact Group 40

Spacecraft and Space Missions

Happy Birthday, Hubble!

The Hubble Space Telescope turns 32 on April 24th, and the team behind the telescope is marking the occasion with the release of a galactic family picture.

AGN (art)

Cosmology

Hubble Image Reveals Possible Quasar Forerunner

A distant object in a deep Hubble Space Telescope field could be in transition from ordinary galaxy to brilliant beacon of light.

Geminid fireball

Solar System

U.S. Space Force Releases Data on Bright Fireballs

The U.S. Department of Defense has released data on some 1,000 bright fireballs. Scientists are still debating if the data confirm an interstellar meteor.

a large orange org against a brown background with clouds and a distant light

Exoplanets

Hot and Cold: Jupiters Reveal Formation and Chemistry of Exotic Worlds

At the extremes: A hot Jupiter reveals extreme chemistry on a sizzling world, and a cold Jupiter sheds light on giant planet formation.

Lensing close-up

Galaxies

Meet Earendel, the Most Distant Star Astronomers Have Observed

The Hubble Space Telescope has revealed a single star whose light has traveled for 12.9 billion years to Earth — the most distant star known.

Odd Radio Circle (ORC) 1

Galaxies

New Image Reveals Possible Origins of “Odd Radio Circles”

This faint ring of radio emission might signal a momentous event in galactic evolution. Then again, it might be something else entirely.

ISS view of Earth at night

Astronomy and Society

Is “Slow Science” the Answer to Astronomy's Carbon Footprint?

The first quantitative assessment of professional telescopes’ carbon footprint finds that these facilities contribute more emissions than all other astronomy research activities combined.

Pulsar

Stellar Science

Pulsar Shoots 7-light-year-long Phaser Blast

Nature proves truth is still stranger than fiction: A pulsar has shot energetic particles in a thin, straight line that extends for light-years into space. The discovery might explain how antimatter makes its way to Earth.

Dimethyl ether detection in protoplanetary disk

Astrobiology

Largest Molecule Yet Found in Planet-forming Disk

The detection of a complex organic molecule in the disk around an infant star suggests prebiotic chemistry starts in the space between stars.

Asteroids in space

Solar System

How Many Moons Can an Asteroid Have?

The discovery of the first quadruple asteroid system raises the question: Is there a limit to how many moons an asteroid can have?

Spiral galaxy NGC 1097, close-up on central region

Galaxies

Magnetic "Spoon" Feeds Supermassive Black Hole

Astronomers have imaged the magnetic field along which gas flows to a galaxy's central black hole.

First Stars (art)

Cosmology

No Signal from Cosmic Dawn

Four years after one experiment found tentative signs of the "cosmic dawn," the era of the first stars, another experiment finds nothing.

Proxima d

Exoplanets

New Planet Discovered Around Proxima Centauri, Star Nearest the Sun

A new instrument on a powerful telescope has enabled astronomers to discover another planet around our nearest stellar neighbor.

HD 93521

Milky Way

A Star Where It Shouldn't Be

There’s a massive star in our galaxy’s halo, far away from the usual star-forming haunts. How did it get there?

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