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Latest ROSAT Stories

density of interstellar helium
2014-07-29 05:14:11

April Flowers for redOrbit.com - Your Universe Online For decades, scientists have been debating over a fog of low-energy X-rays that has been observed over the entire sky. An international group of scientists has used a NASA-funded instrument to resolve this debate. The group refurbished detectors that were first flown on a NASA sounding rocket in the 1970s to confirm that much of this glow is generated by a region of million-degree interstellar plasma known as the local hot bubble (LHB)....

Examining Satellites’ Mysterious Death Tumbling
2014-05-30 03:50:01

ESA Down on the ground, death equals stillness – but not in space. Derelict satellites can tumble in unpredictable ways and ESA’s team tasked with developing a space salvage mission want to find out why. In recent years, satellites beginning uncontrolled reentries have been tracked, such as Russia’s Phobos-Grunt and Germany’s Rosat. In a few cases, satellites suffering unexpected failures in orbit have also been followed, including ESA’s Envisat and Japan’s ADEOS-II. In...

ROSAT Fell To Earth Late Saturday Night
2011-10-23 05:37:41

The German-built Röntgensatellit (ROSAT) fell back to Earth Saturday evening, officials from the National Aeronautics and Space Administration (NASA) told ABC News. In a statement posted to their official website, the German Aerospace Center (DLR) said, "On Sunday, 23 October 2011, between 1:45 UTC (3:45 CEST) and 2:15 UTC (4:15 CEST) the German Roentgen Satellite ROSAT has re-entered Earth's atmosphere. There is currently no confirmation if pieces of debris have reached...

ROSAT Satellite Could Plunge To Earth By Halloween
2011-10-18 04:00:22

Less than a month after one defunct satellite plummeted back to Earth, it appears as though a second is on its way, and the debris could reach our planet's surface by the end of the month, according to a Monday report by Dan Vergano of USA Today. Sometime between 11:23 p.m. EDT on September 23 and 1:09 a.m. EDT on September 24, the Upper Atmosphere Research Satellite (UARS) fell back to earth, splashing down somewhere in the Pacific Ocean. Now Vergano, channeling baseball great Yogi...

Is Another Disabled Satellite Headed for Earth
2011-09-26 04:16:56

  On the heels of the Upper Atmosphere Research Satellite's (UARS) splashdown in the Pacific Ocean, Telegraph reporter Andy Bloxham warned over the weekend that a second satellite is headed for Earth and should re-enter our planet's atmosphere sometime next month. The craft in question is the Röntgensatellit (aka the ROSAT), a 2.4-ton space telescope that was originally constructed by the German Aerospace Center (DLR) and was disabled after its guidance system failed...

6226a859b484773ec2afaa0397910eff1
2008-12-03 17:30:00

NASA's Swift Gamma-ray Explorer satellite rocketed into space in 2004 on a mission to study some of the highest-energy events in the universe. The spacecraft has detected more than 380 gamma-ray bursts, fleeting flares that likely signal the birth of a black hole in the distant universe. In that time, Swift also has observed 80 exploding stars and studied six comets.Comets? ... Comets are "dirty snowballs" made of frozen gases mixed with dust. X-rays come from superhot plasmas. What do cold...


Latest ROSAT Reference Libraries

7_d6897d09acee1dd0c34d0fbf62ff7d0b2
2004-10-19 04:45:44

X-Ray Astronomy -- Although the more energetic X-rays (E > 30 keV) can penetrate the air at least for distances of a few meters (they would never have been detected and medical X-ray machines would not work if this was not the case) the Earth's atmosphere is thick enough that virtually none are able to penetrate from outer space all the way to the Earth's surface. X-rays in the 0.5 - 5 keV range, where most celestial sources give off the bulk of their energy, can be stopped by a few...

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Word of the Day
conjunto
  • A style of popular dance music originating along the border between Texas and Mexico, characterized by the use of accordion, drums, and 12-string bass guitar and traditionally based on polka, waltz, and bolero rhythms.
The word 'conjunto' comes through Spanish, from Latin coniūnctus, past participle of coniungere, to join together; see conjoin