1–20 of 109 results
Theia Impact

Solar System

Where Did Earth’s Trojans Go? Ask the Moon

Why doesn't Earth have Trojan asteroids of its own? Large impacts in the early years of the solar system may be to blame.

Cocooned jets

Stellar Science

Cocoons Around Dying Stars Could Explain New Type of Stellar Explosions

A recently discovered type of stellar explosion might fit right in among the spectrum from regular supernovae to massive gamma-ray bursts.

Milky Way, edge-on view

Milky Way

Hundreds of Thousands of Stars Reveal the Milky Way’s “Teenage” Years

A census of hundreds of thousands of subgiant stars in our galaxy provides a window into the Milky Way's early history.

Globular cluster outside M81

Stellar Science

Fast Radio Burst's Unlikely Home Puzzles Astronomers

Astronomers have found a fast radio burst — presumably a flash from a young stellar remnant — amongst the ancient stars of a globular cluster, challenging ideas about what produces these enigmatic flashes.

Dark matter-less galaxy

Cosmology

How Galaxies Lose Their Dark Matter

A careful study of cosmological simulations shows that dark matter–less galaxies aren't impossible — just really rare.

Asteroid trail in Crab Nebula image by Hubble

Solar System

Citizen Scientists Find 1,000+ Asteroids Photobombing Hubble Images

The combined power of citizen science and machine learning have led to the discovery of more than 1,000 new asteroids in archival images taken by the Hubble Space Telescope.

Black Holes

Does the Andromeda Galaxy Harbor a Mid-weight Black Hole?

New observations suggest a black hole 100,000 times the mass of the Sun lurks in the center of a globular cluster of the Andromeda Galaxy.

Twelve for dinner

Milky Way

Stellar Streams Are Revealing Their Secrets

A detailed study of 12 streams of stars swirling in and around the Milky Way will ultimately help shed light on our galaxy's dark matter halo.

An artist's impression of the dramatic outflows from an active galaxy’s nucleus.

Black Holes

Dwarf Galaxies Shed Light on Black Hole Origins

Astronomers are searching nearby dwarf galaxies for the ancient origins of supermassive black holes.

Compact object emits jets and ring of light in artist's concept of a supernova dubbed

Black Holes

Stellar Remnant at the Core of Mysterious Flash Dubbed "The Cow"

Astronomers have identified the origin of a mysterious flash that occurred three years ago.

Five cluster collisions show how the shapes evolve from bullet to cone to curled tongue

Galaxies

Astronomers Find Confounding Cone Shape in Cluster Collision

Galaxy clusters take eons to collide. Now, astronomers have caught a pair of merging clusters in an in-between stage never seen before.

Image of two bright galaxy cores

Black Holes

Nearest Supermassive Black Hole Pair Discovered

Astronomers have observed a pair of supermassive black holes set to collide in 250 million years.

Astronomy & Observing News

New Observations Challenge Popular Radio Burst Model

Strange behavior caught by two radio observatories may send theorists back to the drawing board.

Cosmology

Twisters in the Cosmic Web

Astronomers have found that the largest structures in the universe spin, making twister-like strings of galaxies and dark matter in the cosmic web.

Dark Energy Survey

Cosmology

Dark Energy Survey Catalogs 226 Million Galaxies

The latest release from the Dark Energy Survey catalogs millions of galaxies, mapping the history of galaxy clustering across space and time.

Closest black hole?

Black Holes

Is the “Unicorn” the Closest Black Hole?

Astronomers again think they have found the black hole nearest to us, just 1,500 light-years away, but the find still needs to be confirmed.

DF2, an apparently dark matter-less galaxy

Galaxies

New Distances Support Idea of Dark Matter-less Galaxies

New distances to two dwarf galaxies with unusually spread-out stars support the idea that these galaxies have little to no dark matter.

Gamma-rays from Milky Way

Milky Way

Tibet Observatory Confirms Existence of Galactic PeVatrons

A Tibetan cosmic-ray observatory has discovered high-energy particle accelerators within our galaxy.

Zodiacal light

Solar System

Zodiacal Dust Seen from Earth Might Come from Mars

Much of the solar system’s interplanetary dust — seen as zodiacal light from Earth — might come from Mars.

Tidal disruption event

Stellar Science

Star-shredding Black Hole Makes Ghostlike Particle

A single high-energy neutrino may shed light on a star being swallowed by a supermassive black hole some 690 million light-years away.

1 2 3 6
Advertisement
Advertisement
Advertisement
Advertisement