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Latest Compton Gamma Ray Observatory Stories

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2006-06-16 09:22:38

Thanks to a clever piece of design and a sophisticated piece of analysis by European astronomers, Integral - ESA's orbiting gamma ray observatory - can now make images of the most powerful gamma-ray bursts even if the spacecraft itself is pointing somewhere completely different. Scientists know that once every day or two, a powerful gamma ray burst (GRB) will take place somewhere in the Universe. Most will last between 0.1 and 100 seconds, so if your telescope is not pointing in exactly the...

2006-02-25 10:17:05

NASA -- Scientists using NASA's Swift satellite have detected a new kind of cosmic explosion. The event appears to be a precursor to a supernova, which is expected to reach peak brightness in about a week's time. UK astronomers and their colleagues around the world are watching closely as they have never seen an explosion of this kind before. Satellites and the world's largest telescopes are now trained on the sight, watching and waiting. The explosion has the trappings of a gamma-ray burst...

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2006-02-13 09:05:00

ESA -- Cosmic space is filled with continuous, diffuse high-energy radiation. To find out how this energy is produced, the scientists behind ESA's Integral gamma-ray observatory have tried an unusual method: observing Earth from space. During a four-phase observation campaign started on January 24th this year, continued until February 9th, Integral has been looking at Earth. Needing complex control operations from the ground, the satellite has been kept in a fixed orientation in space,...

2005-12-05 11:00:00

ESA -- ESA's Science Programme Committee has extended operations of the highly successful astronomical observatories Integral and XMM-Newton for four years, until 16 December 2010 and 31 March 2010 respectively. As usual, there will be a review of the scientific performance and of the missions status in another two years' time, around autumn 2007. The Integral gamma-ray observatory was launched on 17 October 2002, and has been providing ever since an increasingly detailed insight into some...

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2005-10-22 17:48:45

ESA -- Observing the cosmos, full of violent phenomena and extreme energy, has been the task of ESA's Integral gamma-ray observatory since its launch on 17 October 2002. Three years later, the mission is going very well and has recorded a wealth of important discoveries. Integral is surveying the sky continuously using four instruments "“ two main gamma-ray instruments dedicated to imaging (IBIS) and spectroscopy (SPI), an X-ray instrument (JEM-X) and an optical monitor (OMC)....

2005-09-12 10:35:00

LONDON -- A team of Italian astronomers said on Monday they had witnessed the afterglow from one of the brightest and most distant gamma-ray bursts ever detected. Gamma-ray bursts are the most powerful and most brilliant explosions known to man, other than the theoretical Big Bang that many astronomers believe gave birth to the universe -- but their cause remains unknown. The burst known as GRB050904 was first detected on September 4 by the Swift satellite and was more than 12,500 million...

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2005-09-12 07:10:19

Astronomers Find Farthest Known Gamma-Ray Burst with ESO VLT ESO -- An Italian team of astronomers has observed the afterglow of a Gamma-Ray Burst that is the farthest known ever. With a measured redshift of 6.3, the light from this very remote astronomical source has taken 12,700 million years to reach us. It is thus seen when the Universe was less than 900 million years old, or less than 7 percent its present age. "This also means that it is among the intrinsically brightest Gamma-Ray...

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2005-04-07 07:05:00

NASA -- Scientists at NASA and the University of Kansas say that a mass extinction on Earth hundreds of millions of years ago could have been triggered by a star explosion called a gamma-ray burst. The scientists do not have direct evidence that such a burst activated the ancient extinction. The strength of their work is their atmospheric modeling -- essentially a "what if" scenario. The scientists calculated that gamma-ray radiation from a relatively nearby star explosion, hitting the Earth...

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2005-03-25 02:48:25

NASA -- A NASA-funded scientist has produced a new type of picture of the Earth from space, which complements the familiar image of our "blue marble". This new picture is the first detailed image of our planet radiating gamma rays, a type of light that is millions to billions of times more energetic than visible light. The image portrays how the Earth is constantly bombarded by particles from space. These particles, called cosmic rays, hit our atmosphere and produce the gamma-ray light high...

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2005-02-18 06:35:00

NASA -- A great mystery was set in motion a few years ago when a spacecraft designed to measure gamma-ray bursts -- the most powerful explosions in the Universe -- found that Earth was actually emitting some flashes of its own. Named Terrestrial gamma-ray flashes (TGFs), these very short blasts of gamma rays lasting about one millisecond, are emitted into space from Earth's upper atmosphere. Scientists believe electrons traveling at nearly the speed of light scatter off of atoms and...


Latest Compton Gamma Ray Observatory Reference Libraries

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2012-03-24 09:56:35

Atlantis launched from Kennedy Space center on April 5, 1991 at 9:22 AM EST and landed at Edwards Air Force Base on April 11 at 6:55 AM EST. The shuttle orbited 93 times at an altitude of 248 nautical miles at an inclination of 28.45 degrees and travelled 2.5 million miles. The mission lasted 5 days, 23 hours, 32 minutes, and 44 seconds. The first spacewalk since 1985 was performed by two astronauts to test the ability to move themselves and equipment about while working on the planned...

7_7ab115b117284658644e345b89f5ba712
2004-10-19 04:45:43

Gamma-Ray Astronomy -- Gamma-ray astronomy is the astronomical study of gamma rays. Long before experiments could detect gamma rays emitted by cosmic sources, scientists had known that the universe should be producing these photons. Work by Feenberg and Primakoff in 1948, Hayakawa and Hutchinson in 1952, and, especially, Morrison in 1958 had led scientists to believe that a number of different processes which were occurring in the universe would result in gamma-ray emission. These...

6_f3739d4b04b11a1c267bfcc286610ef92
2004-10-19 04:45:41

Hypernova -- A hypernova is a theoretical type of supernova produced when exceptionally large stars collapse at the end of their lifespan. In a hypernova, the core of the star collapses directly into a black hole and two extremely energetic jets of plasma are emitted from its rotational poles at nearly light speed. These jets emit intense gamma rays, and are a candidate explanation for gamma ray bursts. Theorists have come up with several plausible explanations for hypernovae. It may...

6_f5324ad7d5514381282c99963af8be7c2
2004-10-19 04:45:41

Gamma-Ray Burst -- In astronomy, Gamma-ray bursters (GRBs) are flashes of gamma rays that last from seconds to hours, the longer ones being followed by several days of X-ray afterglow. They occur at random positions in the sky several times each day. They are now believed to result from tremendous explosions in far away galaxies, during the creation of a black hole from a dying star or two colliding neutron stars. The black hole, surrounded by a rotating disk of matter falling into it,...

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Word of the Day
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.