2421–2440 of 6,731 results
tidal disruption event illustration

Black Holes

Black Hole Destroys Star and Shoots Jet

Astronomers have watched the growth of a jet fueled by a shredded star.

Stellar Science

The Aftermath of GW170817: Neutron Star or Black Hole?

A team of scientists says we now have an answer to one of the biggest mysteries of GW170817: after the neutron stars collided, what object was formed?

Dawn images Ceres from new, low orbit

Space Missions

NASA's Dawn Probe Reaches Its Low, Final Orbit

NASA's Dawn spacecraft has entered a new and final orbit that will take it less than 30 miles above the surface of asteroid Ceres.

Dusty starburst galaxy (art)

Cosmology

Too Many Massive Stars in Universe's Youngest Galaxies

A new method of measuring star formation in the earliest galaxies finds that they’re producing more massive stars than expected — a result that could affect our understanding of how galaxies grow their stars.

Earthrise

Solar System

Apollo Astronauts Warmed the Moon

A new study sheds light on an old mystery surrounding anomalous readings from the Apollo landing sites.

Sedna

Solar System

No Planet Nine? Small-body Pile-up Could Explain Odd Orbits

New research shows that interactions between small objects beyond Neptune’s orbit —and not a hypothetical Planet Nine — could be the reason some far-flung solar system objects “detach” from their original orbits.

Messier 4 (globular cluster)

Astronomy & Observing News

60-Second Astro News: Old Stars, New Clues, and New Dark-Sky Place

This week: Stars in the Milky Way's outskirts give clues to our galaxy's history, ancient stellar cities might not be as old as they appear, and the International Dark-sky Association awards its 100th Dark Sky Place.

Stellar Science

A Massive Neutron Star with a Two-Faced Companion

How massive can a neutron star get? In a recent study, scientists may have identified the most massive neutron star yet — by leveraging observations of its highly irradiated companion.

Mojave drill site on Mars

Solar System

Methane and Other Organics on Mars

The Curiosity rover has detected organic molecules in ancient rocks on Mars.

G2 en route to black hole

Black Holes

More Mystery Objects in the Galactic Center

Astronomers have discovered three more red, dusty objects near the Milky Way’s central black hole that could be merged stars.

Comet Swarm

Stellar Science

What’s Going On with Tabby’s Star? It’s Complicated

Two new studies — one by a group of high school students — are investigating the strange environment around Tabby's Star.

Supernova Remnant E0102

Stellar Science

Astronomers Discover Lonely Neutron Star with a Curious Past

New observations have helped astronomers identify the source of a 2,000-year-old supernova explosion. But this blast, and the neutron star that created it, seem to have a curious history that defies explanation.

Incoming!

Celestial News & Events

Asteroid 2018 LA Explodes Over Botswana Hours After Discovery

Don't look now — it's already gone! Asteroid 2018 LA screeched into Earth's atmosphere only 7 hours after its discovery to create a Sun-bright spectacle over South Africa and Botswana.

Drill Duluth

Solar System

Curiosity Rover is Drilling Again

An innovative technique has allowed NASA's Curiosity Rover to resume drilling Martian rocks. But the partially successful test shows that more work remains to be done.

Europa's amazing surface

Solar System

Why Are the Galilean Moons So Massive?

Scientists propose that Saturn’s meddling helped create the four giant Galilean moons orbiting Jupiter.

Venus and Gemini in mid-June

Celestial News & Events

Tour June's Sky: Venus, Jupiter & Saturn

As you'll learn in this month's astronomy podcast, Jupiter and Saturn will compete with brilliant Venus for your attention in the late-evening sky.

Betelgeuse's bow shock

Night Sky Sights

Meet Betelgeuse, the Red Giant of Orion

Betelgeuse, the brilliant red star at the right shoulder of Orion, is a supergiant whose girth extends out to the orbit of Jupiter.

dunes on pluto

Solar System

Dunes on Pluto

Planetary scientists think they’ve found wind-built ripples of methane ice on the king of the Kuiper Belt.

Celestial News & Events

Vesta Gets Close and Bright

Vesta, the brightest asteroid, puts on one of its best shows ever in June, when it shines enough to see without optical aid.

Gaia

Solar System

Known Close Stellar Encounters Surge in Number

A new analysis of our stellar neighborhood reveals 7 times as much nearby stellar traffic as previously known.