Galaxies fed by funnels of fuel
(Phys.org) —Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws.
May 24, 2013
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May 24, 2013
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Accurate distance measurement resolves major astronomical mystery
(Phys.org) —Sometimes astronomy is like real estate—what's important is location, location, and location. Astronomers have resolved a major problem in their understanding of a class of stars that undergo ...
May 23, 2013
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A hidden population of exotic neutron stars
(Phys.org) —Magnetars – the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation - are some of the most extreme objects known in the Universe. A major campaign using ...
May 23, 2013
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Researchers explain magnetic field misbehavior in solar flares
When a solar flare filled with charged particles erupts from the sun, its magnetic fields sometime break a widely accepted rule of physics. The flux-freezing theorem dictates that the magnetic lines of force ...
May 22, 2013
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Fragile mega-galaxy is missing link in history of cosmos
Two hungry young galaxies that collided 11 billion years ago are rapidly forming a massive galaxy about 10 times the size of the Milky Way, according to UC Irvine-led research published Wednesday in the journal ...
May 22, 2013
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Researchers find winds on Uranus and Neptune confined to thin atmosphere layer
(Phys.org) —A team of researchers from the U.S. and Israel has deduced that the winds that blow on Uranus and Neptune are confined to relatively thin atmospheric layers. In their paper published in the ...
May 16, 2013
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New method of finding planets scores its first discovery
(Phys.org) —Detecting alien worlds presents a significant challenge since they are small, faint, and close to their stars. The two most prolific techniques for finding exoplanets are radial velocity (looking ...
May 13, 2013
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Surprising clutch of hydrogen clouds discovered lurking among our galactic neighbors
(Phys.org) —In a dark, starless patch of intergalactic space, astronomers have discovered a never-before-seen cluster of hydrogen clouds strewn between two nearby galaxies, Andromeda (M31) and Triangulum ...
May 08, 2013
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Herschel finds hot gas on menu for Milky Way's black hole
(Phys.org) —ESA's Herschel space observatory has made detailed observations of surprisingly hot molecular gas that may be orbiting or falling towards the supermassive black hole lurking at the center of ...
May 07, 2013
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New kind of cosmic flash may reveal something never seen before: Birth of a black hole
(Phys.org) —When a massive star exhausts its fuel, it collapses under its own gravity and produces a black hole, an object so dense that not even light can escape its gravitational grip. According to a ...
May 03, 2013
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Entire galaxies feel the heat from newborn stars: Bursts of star birth can curtail future galaxy growth
(Phys.org) —Astronomers using the NASA/ESA Hubble Space Telescope have shown for the first time that bursts of star formation have a major impact far beyond the boundaries of their host galaxy. These energetic ...
Apr 25, 2013
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Detection of the cosmic gamma ray horizon: Measures all the light in the universe since the Big Bang
(Phys.org) —How much light has been emitted by all galaxies since the cosmos began? After all, every photon (particle of light) from ultraviolet to far infrared wavelengths ever radiated by all galaxies ...
May 24, 2013
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Scientists work out way to use pulsars to provide self navigation to spacecraft in solar system
(Phys.org) —A trio of German space scientists has worked out a way to use pulsars as navigation aids for space vehicles traveling in the solar system. As they describe in their paper uploaded to the preprint ...
May 24, 2013
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Hubble reveals the ring nebula's true shape
(Phys.org) —The Ring Nebula's distinctive shape makes it a popular illustration for astronomy books. But new observations by NASA's Hubble Space Telescope of the glowing gas shroud around an old, dying, ...
May 23, 2013
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Researchers reveal model of Sun's magnetic field
Researchers at the Universities of Leeds and Chicago have uncovered an important mechanism behind the generation of astrophysical magnetic fields such as that of the Sun.
May 22, 2013
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