• ROSAT Satellite: Uncontrolled Re-Entry on Oct. 22 or 23

    Another huge piece of space debris, a 2.6-ton, defunct German telescope called the Roentgen Satellite (ROSAT), will crash back to Earth Saturday or Sunday (Oct. 22 or 23), and the chances it will hit someone are even greater this time around. The odds are 1-in-2,000

  • ROSAT decay update

    The massive ROSAT X-ray space telescope continues to descend toward Earth. Latest estimates place the re-entry around noon Universal Time on Oct. 23rd. Uncertainties exceed 10 hours, which makes it impossible to say exactly where ROSAT will re-enter. Many sky watchers

  • German satellite could collide with Earth in late 2011

    A German satellite called ROSAT weighing 2,426 kilograms (nearly 3 tons) is expected to crash from the sky in late 2011, according to calculations made by the German Space Agency, commonly known by the German acronym DLR. “We expect the satellite to re-enter the

  • New insights on changes in the ozone layer

    German Aerospace Center researchers have been instrumental in the preparation of a report on the changes in the Ozone Layer for the World Meteorological Organization (WMO). The report was published online by the Geneva-based WMO in January. Recent estimates suggest