1–20 of 98 results
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

Black Holes

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.

Protocluster

Galaxies

Astronomers Spot Galaxies Clustering in Early Universe

Astronomers have discovered a cluster of galaxies coming together just 770 million years after the Big Bang.

Giant flare on a magnetar

Stellar Science

Masquerading Magnetars Make Short Brilliant Bursts

Giant flares emitted from the surface of highly magnetized neutron stars could explain some gamma-ray flashes astronomers have caught over the past few decades.

Supermassive black hole devouring a star

Black Holes

Black Hole Feasts on Star, Bite by Bite

Like a cosmic blinker, a distant supermassive black hole is flaring every 114 days. Astronomers believe the eerily regular signal betrays the piecemeal devouring of a star.

Babylonian planet grouping

Astronomy and Society

Ancient Babylonians Witnessed Unique Planetary Gathering

Jupiter and Saturn's "Great Conjunction" is a noteworthy event, but on the morning of March 25, 185 BC, an even grander planetary gathering greeted Babylonian sky watchers

Stellar Science

Gaia Makes Most Accurate 3D Map of the Milky Way Yet

Astronomers have released a new, extremely detailed three-dimensional census of our Milky Way galaxy.

Brown dwarf aurorae

Exoplanets

Radio Transmission from a Brown Dwarf

The radio discovery of a brown dwarf holds promise for future exoplanet detections.

Jovian sprite

Solar System

Juno Discovers Sprites and Elves on Jupiter

NASA's Juno spacecraft has captured ultraviolet images of a rare atmospheric phenomenon in Jupiter's atmosphere.

Psyche

Solar System

Psyche: A Metal-Rock World with Iron Lava?

New observations suggest the main-belt asteroid Psyche is an intriguing world, possibly one with volcanic flows of iron on its surface.

Near-Earth asteroid passing Earth

Solar System

(Very) Small Chance of Apophis Asteroid Impact in 2068

The subtle effect of sunlight may turn the near-Earth asteroid Apophis toward Earth in 2068 . . . but chances for impact remain small.

Ariel transits Uranus

Solar System

Uranian Moons Are Like Dwarf Planets

The moons of Uranus exhibit heat signatures similar to dwarf planets in the Kuiper Belt — where the moons were likely born.

Jupiter, Ganymede, Europa and double shadows, March 25, 2019

Solar System

Study Suggests Jupiter Could Have 600 Moons

New detections of candidate moons suggest that the king of planets could have hundreds of smaller satellites.

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