Astronomy TOP STORY

A Galactic Collision

© STSCI

NGC 5256

A riot of colour and light dances through this peculiarly shaped galaxy, NGC 5256.


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Stellar Nursery in NGC 6559

© ESO

Sharpless 29 in NGC 6559

The OmegaCAM camera on ESO's VLT Survey Telescope has captured this glittering view of the stellar nursery called Sharpless 29.

Telescopes Team Up to Study Galaxy Centaurus A

Telescopes Team Up to Study Galaxy Centaurus A

Astronomers have used two Australian radio telescopes and several optical telescopes to study complex mechanisms that are fuelling jets of material blasting away from a black hole 55 million times more massive than the Sun.


Massive Primordial Galaxies Found in Halo of Dark Matter

Massive Primordial Galaxies Found in Halo of Dark Matter

Observations of two galaxies made with the National Science Foundation-funded Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope suggest that large galaxies formed faster than scientists had previously thought.


Farthest Known Supermassive Black Hole Discovered

Farthest Known Supermassive Black Hole Discovered

Scientists have uncovered a rare relic from the early universe: the farthest known supermassive black hole.


A New Spin to Solving Mystery of Stellar Companions

A New Spin to Solving Mystery of Stellar Companions

Taking a picture of an exoplanet--a planet in a solar system beyond our sun--is no easy task.


Neutron Stars on the Brink of Collapse

Neutron Stars on the Brink of Collapse

When a very massive star dies, its core contracts. In a supernova explosion, the star's outer layers are expelled, leaving behind an ultra-compact neutron star.


Cartography of the Cosmos

Cartography of the Cosmos

There are hundreds of billions of stars in our own Milky Way galaxy.


The Most Detailed Radio Image of the Small Magellanic Cloud

The Most Detailed Radio Image of the Small Magellanic Cloud

Astronomers at The Australian National University (ANU) have created the most detailed radio image of nearby dwarf galaxy, the Small Magellanic Cloud, revealing secrets of how it formed and how it is likely to evolve.


3D Stellar Motions Measured With Record-Breaking Precision

3D Stellar Motions Measured With Record-Breaking Precision

A team of astronomers used data from both the NASA/ESA Hubble Space Telescope and ESA's Gaia satellite to directly measure the 3D motions of individual stars in a nearby galaxy.


Nearby Pulsars Shed Light On The Antimatter Puzzle

Nearby Pulsars Shed Light On The Antimatter Puzzle

There are too many high-energy positrons in the cosmic rays reaching the Earth.


Detection of a Black Hole Binary Merger From 8 June 2017

Detection of a Black Hole Binary Merger From 8 June 2017

Scientists searching for gravitational waves have confirmed yet another detection from their fruitful observing run earlier this year.


Zwicky Transient Facility Sees First Light

Zwicky Transient Facility Sees First Light

A new robotic camera with the ability to capture hundreds of thousands of stars and galaxies in a single shot has taken its first image of the sky -- an event astronomers refer to as "first light."


Contracting White Dwarf Observed For The First Time

Contracting White Dwarf Observed For The First Time

Astrophysicists from MSU (Russia) and his colleagues from Italy and Russian Academy of Sciences have found the first observational evidence for a contracting white dwarf.


Two Galaxies In An Extreme Starbursting Merger

Two Galaxies In An Extreme Starbursting Merger

New observations with the Atacama Large Millimeter/submillimeter Array (ALMA) have uncovered the never-before-seen close encounter between two astoundingly bright and spectacularly massive galaxies in the early universe.


Listening for Gravitational Waves Using Pulsars

Listening for Gravitational Waves Using Pulsars

One of the most spectacular achievements in physics so far this century has been the observation of gravitational waves, ripples in space-time that result from masses accelerating in space.


Hubble Spots Expanding Light Echo Around Supernova

Hubble Spots Expanding Light Echo Around Supernova Video in Story

Light from a supernova explosion in the nearby starburst galaxy M82 is reverberating off a huge dust cloud in interstellar space.


A Star That Would Not Die

A Star That Would Not Die

Supernovae, the explosions of stars, have been observed by the thousands. And in all cases, the transient astronomical events signaled the death of those stars.



More top stories from December.