Astronomy TOP STORY

Andromeda's Bright X-Ray Mystery Solved by NuSTAR

© NASA

Andromeda

The Milky Way's closest neighbor, Andromeda, features a dominant source of high-energy X-ray emission, but its identity was mysterious until now.


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Astronomy TOP STORIES

Gravitational Wave Kicks Monster Black Hole Out of Galactic Core

© STSCI

3C 186

Astronomers have uncovered a supermassive black hole that has been propelled out of the center of a distant galaxy by what could be the awesome power of gravitational waves.

New Study Maps Space Dust in 3-D

New Study Maps Space Dust in 3-D Video in Story

Berkeley Lab-led research raises new questions about properties of dust in local and distant reaches of Milky Way


Swift Maps a Star's 'Death Spiral' into a Black Hole

Swift Maps a Star's 'Death Spiral' into a Black Hole Video in Story

Some 290 million years ago, a star much like the sun wandered too close to the central black hole of its galaxy.


Protostar Reshapes Its Stellar Nursery

Protostar Reshapes Its Stellar Nursery

A massive protostar, deeply nestled in its dust-filled stellar nursery, recently roared to life, shining nearly 100 times brighter than before.


Runaway Star Yields Clues to Breakup of Multi-Star System

Runaway Star Yields Clues to Breakup of Multi-Star System

As British royal families fought the War of the Roses in the 1400s for control of England's throne, a grouping of stars was waging its own contentious skirmish -- a star wars far away in the Orion Nebula.


Formation of Supermassive Black Holes in the Very Early Universe

Formation of Supermassive Black Holes in the Very Early Universe

Observations in the past decade have demonstrated that extremely massive supermassive black holes were already in place when the Universe was less than 800 million years old.


Star Discovered in Closest Known Orbit Around Black Hole

Star Discovered in Closest Known Orbit Around Black Hole

Astronomers have found evidence for a star that whips around a black hole about twice an hour. This may be the tightest orbital dance ever witnessed for a black hole and a companion star.


Hubble Hones in on a Hypergiant's Home

Hubble Hones in on a Hypergiant's Home

This beautiful Hubble image reveals a young super star cluster known as Westerlund 1, only 15,000 light-years away in our Milky Way neighborhood, yet home to one of the largest stars ever discovered.


Dawn Identifies Age of Ceres' Brightest Area

Dawn Identifies Age of Ceres' Brightest Area

The bright central area of Ceres' Occator Crater, known as Cerealia Facula, is approximately 30 million years younger than the crater in which it lies, according to a new study in the Astronomical Journal. Scientists used data from NASA's Dawn spacecraft to analyze Occator's central dome in detail, concluding that this intriguing bright feature on the dwarf planet is only about 4 million years old -- quite recent in terms of geological history.


Cosmic Environments and Their Influence in Star Formation

Cosmic Environments and Their Influence in Star Formation

The scaffolding that holds the large-scale structure of the universe constitutes galaxies, dark matter and gas (from which stars are forming), organized in complex networks known as the cosmic web.


Discovery of Some of the Most Power-packed Galaxies

Discovery of Some of the Most Power-packed Galaxies

When the universe was young, a supermassive black hole -- bloated to the bursting point with stupendous power -- heaved out a jet of particle-infused energy that raced through the vastness of space at nearly the speed of light.


Origin and Nature of the Outskirts of Stellar Megalopolises

Origin and Nature of the Outskirts of Stellar Megalopolises

Galaxies have dramatically grown in size since the early Universe, and elliptical galaxies, in particular, are the largest galaxies in both size and mass. What is the main driver behind the late growth of their outer parts was the question that motivated this study.


Hubble Studies The Cosmic Microwave Background

Hubble Studies The Cosmic Microwave Background

The events surrounding the Big Bang were so cataclysmic that they left an indelible imprint on the fabric of the cosmos.


NuSTAR Helps Find Universe's Brightest Pulsars

NuSTAR Helps Find Universe's Brightest Pulsars

There's a new record holder for brightest pulsar ever found -- and astronomers are still trying to figure out how it can shine so brightly. It's now part of a small group of mysterious bright pulsars that are challenging astronomers to rethink how pulsars accumulate, or accrete, material.


30th Anniversary Image of Supernova 1987A

30th Anniversary Image of Supernova 1987A

Three decades ago, a massive stellar explosion sent shockwaves not only through space but also through the astronomical community.


Vast Luminous Nebula Poses a Cosmic Mystery

Vast Luminous Nebula Poses a Cosmic Mystery

Astronomers have found an enormous, glowing blob of gas in the distant universe, with no obvious source of power for the light it is emitting.


Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1

Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1 Video in Story

Astronomers have found a system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes, including ESO's Very Large Telescope, the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1.



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