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Astronomy news. New! Earth-like extrasolar planet found; double helix nebula; supermassive black holes, astronomy articles, astronomy pictures. Updated daily.
Updated: 21 hours 41 min ago

New hot Jupiter marks the first collaborative exoplanet discovery

Tue, 07/18/2017 - 8:52am
Researchers have discovered a new 'Hot Jupiter' exoplanet.

New brown dwarf discovered by citizen science project

Mon, 07/17/2017 - 3:09pm
One night three months ago, Rosa Castro finished her dinner, opened her laptop, and uncovered a novel object that was neither planet nor star. Therapist by day and amateur astronomer by night, Castro joined the NASA-funded Backyard Worlds: Planet 9 citizen science project when it began in February -- not knowing she would become one of four volunteers to help identify the project's first brown dwarf, formally known as WISEA J110125.95+540052.8.

Space sound waves around Earth: Electrons whistle while they work?

Mon, 07/17/2017 - 11:04am
NASA's Van Allen Probes have observed a new population of space sound waves, called plasmaspheric hiss, which are important in removing high-energy particles from around Earth that can damage satellites.

Hubble spots a barred Lynx spiral

Fri, 07/14/2017 - 6:31pm
Discovered by British astronomer William Herschel over 200 years ago, NGC 2500 lies about 30 million light-years away in the northern constellation of Lynx. NGC 2500 is a particular kind of spiral galaxy known as a barred spiral, its wispy arms swirling out from a bright, elongated core. 

One of the brightest galaxies ever discovered

Fri, 07/14/2017 - 2:03pm
Thanks to an amplified image produced by a gravitational lens, and the Gran Telescopio CANARIAS, a team of scientists has discovered one of the brightest galaxies known from the epoch when the universe had 20 percent of its present age.

Complex gas motion in the centre of the Milky Way

Thu, 07/13/2017 - 4:54pm
Our solar system is located in the outer regions of the Milky Way, a disk-shaped galaxy with an approximate diameter of 100,000 light years. From Earth, its appearance can only be observed indirectly, by measuring positions and movements of stars and gas clouds. In addition to luminous stars, a substantial portion of the visible matter in our Milky Way is interstellar gas. Gas clouds in the so-called central molecular zone (CMZ) -- the innermost 1,500 light years of the Milky Way -- move on an elliptical central disk that has two spiral arms. A comprehensive model has now been used to simulate this motion.

Yes, the sun is an ordinary, solar-type star after all

Thu, 07/13/2017 - 3:50pm
The Sun is a solar-type star, a new study claims -- resolving an ongoing controversy about whether the star at the center of our Solar System exhibits the same cyclic behavior as other nearby, solar-type stars.

Shedding light on Galaxies' rotation secrets

Thu, 07/13/2017 - 3:48pm
Spiral galaxies are found to be strongly rotating, with an angular momentum higher by a factor of about 5 than ellipticals. In a new study, the researchers have traced back the dichotomy in the angular momentum of spiral and elliptical galaxies to their different formation history. In particular, the low angular momentum of ellipticals is mainly originated by nature in the central regions during the early galaxy formation process.

NASA's Juno Spacecraft Spots Jupiter's Great Red Spot

Wed, 07/12/2017 - 8:16pm
Images of Jupiter's Great Red Spot reveal a tangle of dark, veinous clouds weaving their way through a massive crimson oval. The JunoCam imager aboard NASA's Juno mission snapped pics of the most iconic feature of the solar system's largest planetary inhabitant during its July 10 flyby.

Planet Nine hypothesis supported by new evidence

Wed, 07/12/2017 - 11:04am
Last year, the existence of an unknown planet in our Solar system was announced. However, this hypothesis was subsequently called into question as biases in the observational data were detected. Now astronomers have used a novel technique to analyze the orbits of the so-called extreme trans-Neptunian objects and, once again, they point out that there is something perturbing them: a planet located at a distance between 300 to 400 times the Earth-Sun separation.

Unusual galaxy in distant universe

Wed, 07/12/2017 - 7:46am
MACS2129-1 is dead in the sense that it no longer produces stars. But what makes this galaxy particularly significant is the fact that, unlike many dead galaxies, which tend to be elliptical or oval-shaped, this galaxy is disk or spiral-shaped, like the Milky Way, and its stars rotate in a flattened disk, much like the Milky Way's stars.

Smallest-ever star discovered by astronomers

Tue, 07/11/2017 - 10:00pm
The smallest star yet measured has been discovered by a team of astronomers. With a size just a sliver larger than that of Saturn, the gravitational pull at its stellar surface is about 300 times stronger than what humans feel on Earth.

Tracking the birth of a 'super-earth'

Tue, 07/11/2017 - 9:28am
'Synthetic observations' simulating nascent planetary systems could help explain a puzzle -- how planets form -- that has vexed astronomers for a long time.

Cosmic 'dust factory' reveals clues to how stars are born

Mon, 07/10/2017 - 11:36am
A rich inventory of molecules has been found at the center of an exploded star for the very first time, outlines a new report.

Hubble's hidden galaxy

Fri, 07/07/2017 - 1:38pm
Although IC 342 is bright, the galaxy sits near the equator of the Milky Way's disk, thick with glowing cosmic gas, bright stars, and dust, report investigators.

Hubble pushed beyond limits to spot clumps of new stars in distant galaxy

Thu, 07/06/2017 - 3:59pm
By applying a new computational analysis to a galaxy magnified by a gravitational lens, astronomers have obtained images 10 times sharper than what Hubble could achieve on its own.

How to make 'your own supernova'

Thu, 07/06/2017 - 12:50pm
Researchers are using the largest, most intense lasers on the planet, to for the first time, show the general public how to recreate the effects of supernovae, in a laboratory.

Cosmic barbecue: Researchers spot 60 new 'hot Jupiter' candidates

Thu, 07/06/2017 - 12:12pm
Sixty potential new 'hot Jupiters' -- highly irradiated worlds that glow like coals on a barbecue grill and are found orbiting only 1% of Sun-like stars -- have been discovered by researchers.

First discovery of an exoplanet with SPHERE/VLT

Thu, 07/06/2017 - 7:25am
An exoplanet has been discovered by an international team of astronomers by direct imaging using SPHERE, an instrument designed and developed by a consortium of 12 European institutes on the Very Large Telescope ESO, based in Chile. The instrument, which corrects in real time the terrestrial atmospheric turbulences and occults the light of the star, allows to take a real «photography» of the exoplanet.

Milky Way could have 100 billion brown dwarfs

Wed, 07/05/2017 - 9:19pm
Our galaxy could have 100 billion brown dwarfs or more according to a recent survey of dense star clusters, where brown dwarfs are abundant.