Aug 7 1995
From The Space Library
The Hubble Space Telescope (HST) shows that radio galaxies which-existed when the universe was half its present age-are surprisingly varied and intricate structures that are even more complex than previously thought. A team of astronomers at Cambridge University, England, is analyzing 28 radio galaxies that have been imaged by HST in visible light, by the Very Large Array Radio Interferometer, and by the UK Infrared Telescope. They propose that the remarkable structures seen in the Hubble images are different manifestations of activity associated with radio galaxies. The new details may be a combination of light from massive star forming regions, small satellite dwarf galaxies, and bow shocks caused by jets of hot gas blasted out of the galaxy's core by a suspected black hole. The period of strong radio emissions is quite short relative to the total lifetime of a galaxy. (NASA Release 95-133)
The first NASA Starlink flight successfully bounced aircraft-based remote sensing data off a satellite for real-time delivery to an Earth station. It will allow NASA ground stations and remote nodes to monitor and process data from multiple, aircraft-based, high-altitude experiments in real time. The technology can also be used to assist response to major fires, floods, earth-quakes, and hurricanes. (Av Wk, Aug 7/95)
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