Philip's Astronomy Encyclopedia by Eugene H. Ehrlich PDF

By Eugene H. Ehrlich

ISBN-10: 0540078638

ISBN-13: 9780540078639

First released in nice Britain in 1987 via Mitchell Beazley
less than the name The Astronomy Encyclopedia (General Editor
Patrick Moore)
This totally revised and improved variation first released in 2002 by
Philip’s, an imprint of Octopus Publishing Group.

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The manned flights with three astronauts aboard – the Commander (CDR), the Lunar Module Pilot (LMP) and the Command Module Pilot (CMP) – began with Apollo 7. Originally 14 manned Apollo flights were planned but funding cuts later reduced this to 11. As confidence was gained, each mission gathered more scientific data than its predecessors. As durations of EVAs and distances covered increased, more comprehensive selections of rock and soil samples were obtained. More apsides experiments were also deployed or conducted on the lunar surface, and the later orbiting CSMs obtained hundreds of high-resolution stereophotographs and other measurements of the surface.

Archive Collection of records. The archives resulting from the space instruments like the Hubble Space Telescope or IUE are organized as large databases: they can be queried to get the observations matching various criteria, and the observed images can frequently be downloaded on the Internet. The large ground-based observatories are also installing similar large archives. arcminute, arcsecond Small units of angular measure. An arcminute (symbol Ј) is 1/60 of a degree and an arcsecond (symbol Љ) 1/60 of an arcminute, or 1/360 of a degree.

The ice of which most of Ariel’s volume is composed is believed to be rich in ammonia, although this has not been detected by spectroscopy. Ammonia-water ices have the remarkable property of being able to liberate small percentages of melt at temperatures as low as 176 K. As this is only about 100 K warmer than Ariel’s present surface temperature, it goes some way to explaining the former molten nature of the interior and the apparent ease with which cryovolcanic melts have been able to reach and spread over the surface.

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Philip's Astronomy Encyclopedia by Eugene H. Ehrlich

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