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The result is that the onrushing laser beam's pulses continue on their way, each carrying within it a far-ultraviolet pulse about 450 attoseconds in duration.
In 1972, Apollo 16 astronauts John Young and Charles Duke deployed a far-ultraviolet camera-spectrograph at their Descartes Highlands landing site.
Washington, Dec 13 (ANI): A team of German and American astronomers have discovered the hottest white dwarf in the Universe, using NASA's space-based Far-Ultraviolet Spectroscopic Explorer (FUSE).
That's because clouds of hydrogen gas absorb far-ultraviolet light, and the most distant galaxies have the largest amount of hydrogen gas between them and Earth (SN: 2/24/96, p.
Earlier in 2013, Tian and colleagues found that five of six M dwarfs studied with the Hubble Space Telescope cranked out a thousand times more far-ultraviolet energy, compared with near-ultraviolet, than the Sun does.
Nonetheless, the image taken in far-ultraviolet wavelengths captured more than 400 stars and star-forming galaxies in the constellation Hercules, while the near-ultraviolet picture recorded more than 1,500 such objects.
At the opposite end of the spectrum, sudden, dramatic brightening of Venus's night side at far-ultraviolet wavelengths was detected on several occasions by NASA's Pioneer Venus Orbiter during the 1980s.