Far Ultraviolet Spectroscopic Explorer
| FUSE (Explorer 77) | |
|---|---|
|
|
| Type: | Space telescope |
| Country: |
 United States
|
| Operator: |
 NASA
|
| COSPAR-ID : | 1999-035A |
| Mission dates | |
| Dimensions: | 1400 kg |
| Begin: | June 24, 1999, 15:44 UTC |
| Starting place: | Cape Canaveral , LC-17A |
| Launcher: | Delta-II-7320 D271 |
| Status: | out of service since 2007 |
| Orbit data | |
| Rotation time : | 99.6 min |
| Orbit inclination : | 25.0 ° |
| Apogee height : | 759 km |
| Perigee height : | 744 km |
The Far Ultraviolet Spectroscopic Explorer ( FUSE ) is a space telescope for ultraviolet astronomy .
FUSE was a NASA satellite project led by Johns Hopkins University , in collaboration with other US institutes and the French and Canadian space agencies. FUSE was launched on June 24, 1999 with a Delta II 7320 rocket. The mission was ended on October 18, 2007 after FUSE could no longer be aligned with its astronomical target objects since July 12, 2007 due to the failure of the last of four of the gyroscopes without position control . FUSE was built for high resolution spectroscopy in the far ultraviolet at wavelengths from 90 to 119 nm . A similar but much less sensitive previous project was OAO-3 (Copernicus) .
One of the goals of FUSE was to determine the ratio of deuterium and hydrogen in many different areas of the Milky Way . Both elements arise in the Big Bang in a relationship predicted by cosmological models, which later changes in stars through nuclear physical processes. FUSE is also studying highly ionized gas in the interstellar medium of our Milky Way and the Magellanic Clouds and the intergalactic medium. Further observations concern z. B. with stars , active galactic nuclei and with molecular hydrogen in various astronomical objects.
Using data from FUSE, a high concentration of krypton and xenon was found in a white dwarf in 2012 . This is why astronomers assume that the noble gases in it were created in the course of the evolution of the stars.
Web links
- FUSE page at JHU (English)
- FUSE in the NSSDCA Master Catalog (English)
- Far Ultraviolet Spectroscopic Explorer at the Mikulski Archive for Space Telescopes (English)
Individual evidence
- ↑ Chris Peat: FUSE - Orbit. In: Heavens Above. May 6, 2012, accessed May 8, 2012 .
- ^ Far Ultraviolet Spectroscopic Explorer at Johns Hopkins University
- ^ NASA Concludes Successful FUSE Mission. NASA, October 17, 2007, accessed December 18, 2013 .
- ↑ Jonathan McDowell: Life and Death of FUSE in Sky and Telescope , September 12, 2007 (English)
- ↑ WHITE DWARFS, first time, krypton and xenon detected . Editor / idw / Press release of the University of Tübingen in Astronews.com, July 2, 2012 , accessed on July 11, 2012
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