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Chandra Spots Plume in Galaxy Cluster.


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Science

New Clues About the Great Dying

Image credit: NASA
scientists know that approximately 250 million years something wiped out almost all the life on Earth; however, what exactly happened has remained a mystery - was it a volcano, asteroid strike, or something else? New evidence has been found in pockets of gas deep inside rocks that were formed during the time of the event. The gas contains higher than normal levels of a specific type of helium and argon which is more common in space, so something must have brought the material to Earth, probably an asteroid.
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Jan 30, 2002, 7:28pm

Astronomy

Chandra Spots Plume in Galaxy Cluster

Image credit: Chandra
The latest photograph released from the Chandra X-Ray Observatory shows a long plume of gas and dust wrapped around the Centauris Galaxy cluster. Astronomers are puzzled about what the plume is; although, they know it has the same mass as 1 billion suns and is several million degrees cooler than its surroundings. One possibility is that the plume consists of a trail of debris stripped off another Galaxy which fell into the cluster.
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Jan 30, 2002, 7:17pm

Space Flight

Odyssey Reaches Final Mapping Orbit

Image credit: NASA
NASA’s Mars Odyssey spacecraft has reached its final mapping orbit after three months of aerobraking manoeuvres around the Red Planet. At 2014 GMT (5:14pm EST) Odyssey fired its thrusters for 25 seconds and decreased its velocity to maintain an orbit which varies between 387km and 450km above the surface of Mars. Two scientific instruments on the spacecraft have already begun collecting data about the composition of the planet’s surface.


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Jan 30, 2002, 7:06pm

Space Flight

EUVE Expected to Enter the Earth's Atmosphere Shortly

Image credit: NASA
The Extreme Ultraviolet Explorer (EUVE) spacecraft is expected to re-enter the Earth’s atmosphere sometime on Thursday morning. Although they don’t know where or when it will crash - as far South as Brisbane, Australia, and as far North as Orlando, Florida - NASA believes that most of the spacecraft will be destroyed on re-entry with some pieces crashing into the ocean. Unlike many large spacecraft, the EUVE wasn’t built with a propulsion system to control its crash location. During its eight years in orbit, the EUVE observed over 1,000 objects in the extreme ultraviolet spectrum.
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Jan 30, 2002, 6:47pm

Space Flight

Shuttle Columbia Rolls out to the Launch Pad

Image credit: NASA
The Space Shuttle Columbia rolled out to the launch pad on Monday to prepare for the launch of STS-109; the fourth mission to retrieve and upgrade the Hubble Space Telescope. If everything goes smoothly, Hubble will lift off on February 28th, and rendezvous with the telescope in space. Over the course of the mission, shuttle astronauts will perform five spacewalks to install a new camera system, solar arrays, and power controller onto the aging space observatory.
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