1–20 of 487 results
Mars interior

Solar System

NASA's Insight Reveals First Look Inside Mars

The Insight mission science team has used about 10 deep marsquakes to take stock of the planet's anatomy.

Orphan cloud seen in X-rays and visible light

Galaxies

Lost & Found: Milky Way-size "Orphan Cloud"

Astronomers have found a giant gas cloud, likely stripped from its parent galaxy long ago, in a cluster 330 million light-years away.

Smallest white dwarf comparison to Moon

Stellar Science

Moon-size White Dwarf Is the Smallest Ever Found

Astronomers have discovered a white dwarf only slightly bigger than the Moon, making it the smallest ever found. It might even be on the edge of collapse.

Galaxies

Galaxies That Evolve Together But Don’t Stay Together

A study of 36 dwarf galaxies within a volume of space spanning 13 million light-years show they all have remarkably similar histories despite the vast distances between them.

Epsilon Aurigae model

Stellar Science

The Giant Star That "Blinked"

Astronomers are trying to understand why a giant star "blinked," fading almost completely before brightening again over the course of about 200 days.

CHIME

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.

Galactic center

Black Holes

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.

Illustration of surface of planet orbiting Barnard's star

Exoplanets

Astronomers Challenge Claim of Planet Around Barnard's Star

Astronomers thought a super-Earth might orbit nearby Barnard's star. But a new study disputes that claim, arguing that stellar activity might be masquerading as the planetary signal.

Infrared Jupiter

Solar System

Sights and Sounds of the Solar System

Spacecraft are returning sights and sounds from Venus, Jupiter, and beyond — here's a sampling.

Neutron star

Stellar Science

What’s Inside Neutron Stars?

Size measurements of two neutron stars have narrowed down what kinds of exotic matter might exist in their extremely dense cores.

The Large Magellanic Cloud's

Milky Way

Dark Matter "Wake" in the Milky Way's Outer Reaches

Astronomers have discovered that a satellite of the Milky Way has left a "wake" in the dark matter halo that surrounds our galaxy.

Proxima Centauri flare

Exoplanets

Proxima Centauri Releases Powerful Flare

The Sun dwarfs its nearest stellar neighbor, but Proxima Centauri's flares pack a comparatively energetic punch.

Crab Nebula

Stellar Science

Crab Pulsar's Mystery Bursts Are Even More Powerful Than We Thought

The Crab Nebula pulsar has sporadically bursted for decades. Now, astronomers have found these mysterious bursts release even more energy than thought.

NGC 1365

Galaxies

Astronomers Use AI to Investigate Quasars and Galaxies Galore

New applications of machine learning have enabled astronomers to classify 27 million galaxies and pick out a dozen rare quadruply lensed quasars.

Comet Borisov

Solar System

Interstellar Comet Was Pristine Sample of Planet Formation

New analysis shows that Comet 2I/Borisov, which zipped nearest the Sun in late 2019, was unlike any comet we’ve seen before.

Milky Way impression

Milky Way

The Milky Way’s Local Arm Is Longer Than We Thought

New maps of the Milky Way suggest the Local Arm that we call home is longer than expected — now upgraded to a major spiral feature (but not quite an arm).

Most distant quasar

Black Holes

A Supermassive Black Hole on the Move

This supermassive black hole is restless, and astronomers want to know why.

Infant stars in Orion

Astronomy & Observing News

Astronomy in Pictures: Jupiter's Aurora, Cosmic Threads & Newborn Stars

This week in pictures: Astronomers have watched auroral storms at Jupiter, imaged strands of the cosmic web, and seen stellar fireworks off the sword of Orion.

The loss of water on Mars

Solar System

Is an Ocean of Mars Water Trapped in the Planet’s Crust?

A new study suggests that by 3 billion years ago, most of the Red Planet’s water was locked away in minerals, and it has stayed there ever since.

Mars North Pole

Spacecraft and Space Missions

See the Latest Stunning Images from Mars

NASA's Perseverance rover, China's Tianwen 1, and the United Arab Emirates' Hope orbiter share their latest photos from Mars.

1 2 3 25
Advertisement
Advertisement
Advertisement
Advertisement