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One of the fastest moving stars ever seen is challenging theories to explain its blistering speed. The cosmic cannonball, a neutron star known as RX J0822-4300, was discovered with NASA's Chandra X-ray Observatory. Astronomers used five years of Chandra observations to show that the rogue star is careening away from the Puppis A supernova remnant, leftovers of a star that exploded about 3,700 years ago. The neutron star is racing out of our Milky Way Galaxy at about 3 million mph (4.8 million kph). "Just after it was born, this neutron star got a one-way ticket out of the galaxy,"...

A distant eruption of high-energy gamma rays is evidence for a black hole swallowing another dense object called a neutron star, astronomers announced today. A neutron star is a stellar corpse with a mass equal to a few suns packed into a space no more than 12 miles across. Black holes are even denser objects, so dense that matter and even light can't escape once inside their spheres of invisible influence. Scientists have long suspected collisions between these objects are common. Other recent bursts have looked similar, but observations from NASA's orbiting Swift satellite and other telescopes, recorded July 24...

Earthquakes and Tsunamis are triggered by Star-quakes – the invisible interconnection between different parts of the Universe The position of SGR1806-20 in a radio image of the sky - 50,000 light-years away Staff Reporter Mar. 7, 2005 Computer models are showing an interesting relationship between star-quakes and earthquakes. Supernova, star-quakes and similar burst of energy in the Universe triggers earthquakes and tsunamis. According to researchers, most of the large earthquakes and Tsunamis happened when there was a burst of energy somewhere in the cosmos. According to BBC, Astronomers say they have been stunned by the amount of energy released in...

A huge explosion halfway across the galaxy packed so much power it briefly altered Earth's upper atmosphere in December, astronomers said Friday.No known eruption beyond our solar system has ever appeared as bright upon arrival. But you could not have seen it, unless you can top the X-ray vision of Superman: In gamma rays, the event equaled the brightness of the full Moon's reflected visible light. The blast originated about 50,000 light-years away and was detected Dec. 27. A light-year is the distance light travels in a year, about 6 trillion miles (10 trillion kilometers). The commotion was caused by...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2004 March 6 N49's Cosmic Blast Credit: Hubble Heritage Team (STScI / AURA), Y. Chu (UIUC) et al., NASA Explanation: Scattered debris from a cosmic supernova explosion lights up the sky in this gorgeous composited image based on data from the Hubble Space Telescope. Cataloged as N49, these glowing filaments of shocked gas span about 30 light-years in our neighboring galaxy, the Large Magellanic Cloud. Light from the...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 September 27 Accretion Disk Simulation Credit: Michael Owen, John Blondin (North Carolina State Univ.) Explanation: Don't be fooled by the familiar symmetry. The graceful spiral structure seen in this computer visualization does not portray winding spiral arms in a distant galaxy of stars. Instead, the graphic shows spiral shock waves in a three dimensional simulation of an accretion disk -- material swirling onto a compact central object...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 September 20 The Crab Nebula Pulsar Shrugs Credit: J. Hester (ASU), CXC, HST, NOAO, NSF, NASA Explanation: How does a city-sized neutron star power the vast Crab Nebula? The expulsion of wisps of hot gas at high speeds appears to be at least part of the answer. Yesterday time-lapse movies taken from both the Chandra X-ray Observatory and the Hubble Space Telescope were released showing a wisp...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 August 30 Semeis 147: Supernova RemnantCredit & Copyright: Steve Mandel Explanation: It's easy to get lost following the intricate filaments in this stunningly detailed image of faint supernova remnant Simeis 147. Seen towards the constellation Taurus it covers nearly 3 degrees (6 full moons) on the sky corresponding to a width of 150 light-years at the stellar debris cloud's estimated distance of 3,000 light-years. On three separate...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 July 14 The Crab Nebula from VLT Credit: FORS Team, 8.2-meter VLT, ESO Explanation: The Crab Nebula, filled with mysterious filaments, is the result of a star that was seen to explode in 1054 AD. This spectacular supernova explosion was recorded by Chinese and (quite probably) Anasazi Indian astronomers. The filaments are mysterious because they appear to have less mass than expelled in the original supernova and...

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 June 17 NGC 4697: X-Rays from an Elliptical Galaxy Credit : C. Sarazin (UVa), et al., CXC, NASA Explanation: The many bright, point-like sources in this Chandra Observatory x-ray image lie within NGC 4697, an elliptical galaxy some 40 million light-years away towards Virgo. Like other normal elliptical galaxies, NGC 4697 is a spherical ensemble of mainly older, fainter, low mass stars, with little star forming gas...