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A glowing cosmic structure millions of light-years long represents the aftermath of the impact of two merging galaxy clusters, researchers say."This is one of the biggest structures ever observed," study lead author Ettore Carretti told SPACE.com. "It is more than 100 times the size of our galaxy, the Milky Way, which already stretches for 100,000 light-years."Carretti, an astrophysicist at the Commonwealth Scientific and Industrial Research Organization in Australia, and his colleagues used the Parkes Radio Telescope in New South Wales to analyze a cluster of galaxies known as Abell 3667. The cluster lies about 730 million light-years from Earth. (A light-year is the distance light travels in one year, about 5.9 trillion miles.)" Clusters of galaxies are made of thousands of galaxies and are among the largest gravitationally bound structures," Carretti noted.The researchers detected a diffuse radio glow in the gas and dust connecting the cluster's periphery to its core. The structure ...
Building a universe from scratch that brims with galaxies resembling those around us is now possible on supercomputers for the first time, researchers say.Our galaxy...
Earth probably formed in a hotter, drier part of the solar system than previously thought, which could explain our planet's puzzling shortage of water, a new study r...
Astronomers have discovered 41 new alien planets in one sweep by analyzing how each world gravitationally yanks on its neighbors.The newly confirmed exoplanets were ...
Though 2012 has been a rough year for international cooperation in planetary exploration, space agencies around the globe should remain committed to working together...
This week, skywatchers will have the chance to catch a winking "demon star" in the night sky.The star, known as Algol, is located in the constellation of Perseus, th...
Four pairs of what astronomers are calling "impossible stars" — stellar twins in orbits so close they defy explanation — have been found in our Milky Way galaxy, sci...
One of the closest galaxies to the Milky Way is a star thief, astronomers say.New simulations suggest that the Large Magellanic Cloud (LMC) snatched a stream of star...
Dark energy, the mysterious substance thought to be accelerating the expansion of the universe, almost certainly exists despite some astronomers' doubts, a new study...
This weekend brings us the return of the famous Leonid meteor shower, a meteor display that has brought great anticipation and excitement to night sky watchers aroun...
Asteroid belts similar to the one between Mars and Jupiter appear to be rare beyond our solar system, implying that complex alien life may be rare as well, a new stu...
Robert F. Christy, a former California Institute of Technology professor who helped design the trigger mechanism for the atomic bombs used in World War II, died Wedn...
Stars crowd together into galaxies, galaxies assemble into clusters, and clusters amass to form superclusters. Astronomers, probing ever-larger volumes of the cosmos...
The famous British astronomer Sir Patrick Moore, who inspired a love of science in many through his BBC television program "The Sky At Night," died at age 89 on Sund...
If you were disappointed with the meager showing put on by this year's Leonid Meteor Shower, don't fret. What potentially will be the best meteor display of the yea...
Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretches 4 billion light-years from end to end.The st...
The most magnetic massive star seen yet is dragging a giant cloak of trapped charged particles around it.This newly discovered star, NGC 1624-2, could help shed ligh...
Astronomers have taken their first 3D look at a gigantic filament of dark matter, an invisible cosmic structure that can only be detected by its gravitational effect...
The rate of star formation in the universe has dropped to just 3 percent of its long-ago peak, and there's no end in sight to the decline, a new study finds.A team o...
To build a planet you need lots of rubble and that means lots of heavy elements – stuff more massive than atoms of hydrogen and helium. The elemental composition of ...
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