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Two astronomical observatories in orbit around the Earth, the Hubble Space Telescope and the Extreme Ultraviolet Explorer, have been used to investigate the structure of the interstellar gas cloud in which the Sun resides.
June 10, 1996
J Linksy (JILA
),
N. Piskunov (Uppsala University, Sweden),
and B. Wood (JILA)
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For years, astronomers have thought that the X-ray emitting "star", circled at left, contained enough mass to list it among a handful of known black-hole candidates within binary star systems... But using the Hubble Space Telescope, scientists from the University of Washington have discovered that the starlight in this locale -- about 50,000 times too faint to be seen with the naked eye -- actually comes from a trio of stars, shown in the same-scale image at right.
June 12, 1996
Right -- Wachter et. al. (
University of Washington)
and NASA
Left -- Paul Schmidtke (Arizona State
University)
and
Cerro Tololo Interamerican Observatory, Chile.
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Two nearby stars Wolf 359 (red dwarf, distance 7.5 light years) and Wolf 424 AB (red dwarf binary system, distance 14 light years) have been imaged with the Faint Object Spectrograph detector in ACQIMAGE mode.
Background on star Wolf 359
Background on star Wolf 424
Related Observation: Binary Systems GJ1245AC and GL293.
June 12, 1996
H. Hart and A. Schultz (CSC),
F. Bruhweiler (Catholic University of America),
the HST FOS Imaging Team and
NASA.