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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL You Have Viewed Too Many Free Essays, Term Papers, and Book Reports. Mysterious Blast, Hyernova Mysterious Blast, Hyernova Mysterious Blast, Hypernova Gamma-ray bursts (GRB) have left astronomers scratching their heads since the late 1960s when they were discovered by U.S. military satellites. Part of the mystery began to unlock when astronomers at Northwestern University detected the first observational evidence for the remnants of hypernovae, explosions hundreds of times more powerful than supernovae, last year. Hypernovae may be the possible source of GRBs, making them the most energetic events known in the Universe besides the Big Bang. Northwestern astronomer Daniel Wang identified two hypernova remnants in galaxy M101, also known as the Pinwheel galaxy some 25 million light years away, in April 1999. The remnants were previously thought to be supernovae remnants, but Wang detected strong X-ray emission from them which led him to believe it was an explosion much more powerful than a supernova. One nebula, MF83, has a radius of over 430 light years and is one of the largest remnants known. The other nebula, NGC5471B, is expanding very fast at a velocity of 100 miles per second. The X-ray light from these nebulae is brighter than the brightest supernova remnants known. After Wang calculated the energy needed to produce astronomers, remnants, grbs, grb, galaxy, years, light, hypernova, first, bursts, wang, very, universe, two, supernova, known, x-ray, time, star, source, possible, paczynski, one, much, million, last, hypernovae, gamma-ray, explosion, events, energy, detected, burst, away, about Word Count: 777 Acceptance_Essays American_History Anatomy_&_Physiology Animal_Science_&_Zoology Anthropology Architecture Art Astronomy Aviation Biographies Book_Reports Business Computers Creative_Writing Current_Events Economics Education Engineering English Environmental_Science Ethics European_History Film_&_TV Foreign_Languages Geography Government_&_Politics Health_&_Beauty History_Other Human_Sexuality Legal_Issues Marketing Mathematics Medicine Miscellaneous Music Mythology Philosophy Physics Poetry Political_Science Psychology Religion Science Shakespeare Social_Issues Sociology Speech Sports_&_Recreation Supernatural Technology Theater Theses_&_Dissertations

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