Astronomy TOP STORY

Hidden Giant Planet Revealed Around Tiny White Dwarf Star

© University of Warwick/Mark Garlick

Mars Imaged by Hubble

The first evidence of a giant planet orbiting a dead white dwarf star has been found in the form of a disc of gas formed from its evaporating atmosphere.


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Astronomy TOP STORIES

Hubble Detects Dynamic Galactic Duo

© STSCI

NGC 6285 (left) and NGC 6286 (right)

Some galaxies are closer friends than others. While many live their own separate, solitary lives, others stray a little too close to a near neighbor and take their friendship even deeper.

A New Theory For How Black Holes And Neutron Stars Shine Bright

A New Theory For How Black Holes And Neutron Stars Shine Bright

For decades, scientists have speculated about the origin of the electromagnetic radiation emitted from celestial regions that host black holes and neutron stars--the most mysterious objects in the universe.


Scientists Inch Closer Than Ever To Signal From Cosmic Dawn

Scientists Inch Closer Than Ever To Signal From Cosmic Dawn

In a paper on the preprint site ArXiv and soon to be published in the Astrophysical Journal, researchers present the first analysis of data from a new configuration of the MWA designed specifically to look for the signal of neutral hydrogen, the gas that dominated the universe during the cosmic dark age.


Giant Magnetic Ropes in a Galaxy's Halo

This image of the "Whale Galaxy" (NGC 4631), made with the National Science Foundation's Karl G. Jansky Very Large Array (VLA), reveals hair-like filaments of the galaxy's magnetic field protruding above and below the galaxy's disk.


Planets Around A Black Hole?

Planets Around A Black Hole?

Theoreticians in two different fields defied the common knowledge that planets orbit stars like the Sun. They proposed the possibility of thousands of planets around a supermassive black hole.


Citizen Science Discovers A Co-moving Brown Dwarf System

Citizen Science Discovers A Co-moving Brown Dwarf System

We report the discovery of WISE2150-7520AB (W2150AB): a widely separated (~ 341 AU) very low mass L1 + T8 co-moving system.


Outback Telescope Captures The Milky Way's Center And Discovers Remnants Of Dead Stars

Outback Telescope Captures The Milky Way's Center And Discovers Remnants Of Dead Stars

A radio telescope in the Western Australian outback has captured a spectacular new view of the centre of the galaxy in which we live, the Milky Way.


Hubble Studies Gamma-Ray Burst with Highest Energy Ever Seen

Hubble Studies Gamma-Ray Burst with Highest Energy Ever Seen

Gamma-ray bursts are the most powerful explosions in the universe. They emit most of their energy in gamma rays, light which is much more energetic than the visible light we can see with our eyes.


NASA's TESS Helps Astronomers Study Red-giant Stars, Examine a Too-close Planet

NASA's TESS Helps Astronomers Study Red-giant Stars, Examine a Too-close Planet

NASA's planet-hunting TESS Mission keeps giving astronomers new realities to examine and explain.


Scientists Find Evidence Of Missing Neutron Star

Scientists Find Evidence Of Missing Neutron Star

The leftovers from a spectacular supernova that revolutionised our understanding of how stars end their lives have finally been spotted by astronomers at Cardiff University.


A Weakened Black Hole Allows Its Galaxy to Awaken

A Weakened Black Hole Allows Its Galaxy to Awaken

Astronomers have confirmed the first example of a galaxy cluster where large numbers of stars are being born at its core.


The Measurements Of The Expansion Of The Universe Don't Add Up

The Measurements Of The Expansion Of The Universe Don't Add Up

Physicists use two types of measurements to calculate the expansion rate of the universe, but their results do not coincide, which may make it necessary to touch up the cosmological model.


The Violent History Of The Magellanic Clouds

The Violent History Of The Magellanic Clouds

Two peacock-shaped gaseous clouds were revealed in the Large Magellanic Cloud (LMC) by observations with the Atacama Large Millimeter/submillimeter Array (ALMA).


A Runaway Star Ejected From The Galactic Heart Of Darkness

A Runaway Star Ejected From The Galactic Heart Of Darkness

Astronomers have spotted an ultrafast star, traveling at a blistering 6 million km/h, that was ejected by the supermassive black hole at the heart at the Milky Way five million years ago.


NICER Catches Record-setting X-ray Burst

NICER Catches Record-setting X-ray Burst

NASA's Neutron star Interior Composition Explorer (NICER) telescope on the International Space Station detected a sudden spike of X-rays at about 10:04 p.m. EDT on Aug. 20.


Galactic Fountains And Carousels: Order Emerging From Chaos

Galactic Fountains And Carousels: Order Emerging From Chaos

Scientists from Germany and the United States have unveiled the results of a newly-completed, state of the art simulation of the evolution of galaxies


TESS Presents Panorama Of The Southern Sky

TESS Presents Panorama Of The Southern Sky

The glow of the Milky Way -- our galaxy seen edgewise -- arcs across a sea of stars in a new mosaic of the southern sky produced from a year of observations by NASA's Transiting Exoplanet Survey Satellite (TESS).



More top stories from December.