Far Ultraviolet Spectroscopic Explorer
Far Ultraviolet Spectroscopic Explorer (FUSE ) is a space telescope for ultraviolet astronomy.
FUSE was a satellite project of NASA, led by the Johns Hopkins University, in collaboration with other U.S. institutions and the French and Canadian space agencies. FUSE was launched on 24 June 1999 with a Delta II 7320 rocket. The mission was terminated on 18 October 2007, after FUSE could be aligned since 12 July 2007 due to the failure of the last of the four gyroscopes without position control is no longer on his astronomical targets. FUSE was built for high-resolution spectroscopy in the far ultraviolet at wavelengths 90-119 nm. A similar but much less sensitive predecessor project was OAO -3 ( Copernicus).
One of the goals of FUSE was the determination of the ratio of deuterium and hydrogen in many diverse areas of the Milky Way. Both elements are produced in the Big Bang in a predicted ratio of cosmological models, the changes due to nuclear physics processes in stars later. In addition, FUSE investigated high ionized gas in the interstellar medium of the Milky Way and the Magellanic Clouds and the intergalactic medium. Further observations are concerned, for example, with stars, active galactic nuclei and with molecular hydrogen in various astronomical objects.
With data from FUSE a high concentration of krypton and xenon was found in 2012 in a white dwarf. Therefore accept the astronomers that the noble gases have occurred to him in the course of stellar evolution.