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.

	NASA's RXTE Detects 'Heartbeat' of Smallest Black Hole Candidate [16 December 2011] - An international team of astronomers has identified a candidate for the smallest-known black hole using data from NASA's Rossi X-ray Timing Explorer (RXTE). The evidence comes from a specific type of X-ray pattern, nicknamed a "heartbeat" because of its resemblance to an electrocardiogram. The pattern until now has been recorded in only one other black hole system.
	The Heart Of Cygnus, NASA's Fermi Reveals A Cosmic-ray Cocoon [30 November 2011] - The constellation Cygnus, now visible in the western sky as twilight deepens after sunset, hosts one of our galaxy's richest-known stellar construction zones. Astronomers observing the region in visible light see only hints of this spectacular activity thanks to a veil of nearby dust clouds forming the Great Rift. The Great Rift is a dark lane that appears to split the bright band of the Milky Way's central plane.
	Researchers Detail How A Distant Black Hole Devoured A Star [12 September 2011] - Since March, X-rays have been streaming toward Earth as a result of the awakening of a distant galaxy's dormant black hole as it shredded and devoured a star. NASA's Swift satellite first alerted astronomers to intense and unusual high-energy flares from the new source in the constellation Draco.
	NASA's Swift and Hubble Probe Asteroid Collision Debris [06 May 2011] - Late last year, astronomers noticed an asteroid named Scheila had unexpectedly brightened, and it was sporting short-lived plumes. Data from NASA's Swift satellite and Hubble Space Telescope showed the changes were probably caused by a much smaller asteroid colliding with Scheila.
	Suzaku Shows Clearest Picture Yet of Perseus Cluster [25 March 2011] - X-ray observations made by the Suzaku observatory provide the clearest picture to date of the size, mass and chemical content of a nearby cluster of galaxies. The study also provides the first direct evidence for clumping of the million-degree gas clouds in the cluster's outskirts.
	NASA's Fermi Catches Thunderstorms Hurling Antimatter into Space [18 January 2011] - Scientists using NASA's Fermi Gamma-ray Space Telescope have detected beams of antimatter produced above thunderstorms on Earth, a phenomenon never seen before.