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High-Energy Astrophysics News

Welcome to our archive of past news articles.
You will find previous articles listed below from most the recent back to our first articles in 1996.

2004

Link to article Scientific Balloon Circles South Pole on Search for Antimatter
[29 December 2004]
- A group of Japanese and American scientists bundled in thick orange jackets, hats, boots and gloves have ventured down to Antarctica on a search for antimatter. With their high-altitude balloon-borne instrument, they are in an exotic land to learn about exotic particles.


Link to article NASA Successfully Launches Swift Satellite
[22 November 2004]
- NASA's Swift satellite successfully launched on 20 November 2004 aboard a Boeing Delta 2 rocket at 12:16 p.m. EST from Launch Complex 17A at the Cape Canaveral Air Force Station, Fla. The satellite will pinpoint the location of distant yet fleeting explosions that appear to signal the births of black holes.


Link to article Massive Merger Of Galaxies Is The Most Powerful On Record
[29 September 2004]
- An international team of scientists, led by a NASA-funded researcher, announced they observed a nearby head-on collision of two galaxy clusters. The clusters smashed together thousands of galaxies and trillions of stars. It is one of the most powerful events ever witnessed. Such collisions are second only to the Big Bang in total energy output.


Link to article Scientists Gain Glimpse of Bizarre Matter in a Neutron Star
[21 September 2004]
- Scientists have obtained their best measurement yet of the size and contents of a neutron star, an ultra-dense object containing the strangest and rarest matter in the Universe.


Link to article Scientists Spot Doughnut-Shaped Cloud With a Black Hole Filling
[20 July 2004]
- An international team of scientists has found more evidence that massive black holes are surrounded by a doughnut-shaped gas cloud which, depending on our line of sight, blocks the view of the black hole in the center.


Link to article Smoking Gun Found for Gamma-Ray Burst in Milky Way
[17 June 2004]
- Scientists have uncovered evidence that a gamma-ray burst occurred in our own Galaxy only a few thousand years ago. They found this evidence by studying the supernova remnant, W49B, with the Chandra X-ray Observatory and the Palomar 200-inch telescope. W49B is a barrel-shaped nebula located about 35,000 light years from Earth. The new data reveal bright infrared rings, like hoops around a barrel, and intense X-radiation that together indicate that this may be the first remnant of a gamma-ray burst discovered in the Milky Way.


Link to article Chandra Opens New Line Of Investigation On Dark Energy
[26 May 2004]
- Astronomers have detected the mysterious dark energy by applying a powerful, new method that uses images of galaxy clusters made by NASA's Chandra X-ray Observatory. The results trace the transition of the expansion of the universe from a decelerating phase to an accelerating phase that occured several billion years ago.


Link to article Dark Matter May Be Black Hole Pinpoints
[14 May 2004]
- Scientists at Stanford University say that dark matter, a mysterious substance that contributes to about 80 percent of the mass of the Universe, might be at least partially in the form of minuscule black holes.


Link to article World's Most Precise Gyroscopes Ready To Test Einstein Theory
[20 April 2004]
- Gravity Probe-B, NASA's spacecraft designed to test two important predictions of Albert Einstein's general theory of relativity, was successfully launched from Vandenberg Air Force Base, Calif., at 12:57 p.m. EDT, April 20, 2004.


Link to article ESA's Integral Solves Thirty-Year Old Gamma-Ray Mystery
[26 March 2004]
- ESA's Integral gamma-ray observatory has resolved the diffuse glow of gamma rays in the center of our Galaxy and has shown that most of it is produced by a hundred individual sources.


Link to article Giant Black Hole Rips Apart Unlucky Star In Cosmic Reality Show
[23 February 2004]
- Thanks to two orbiting X-ray observatories, astronomers have the first strong evidence of a supermassive black hole ripping apart a star and consuming a portion of it.


Link to article A Neutron Star Emerges As A Rare Magnetic Emerald
[28 January 2004]
- Sometimes astronomers look in the right place at the right time, and that's just what happened in July 2003.


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Imagine the Universe! is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Barbara Mattson
Curator: Meredith Gibb
Responsible NASA Official: Phil Newman
All material on this site has been created and updated between 1997-2014.
This page last updated: Tuesday, 15-Mar-2005 08:16:03 EST