Detail GRAIL Hunt; Mapping the Moon with Gravity   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 405 no. 8816 (Dec. 2012), page 116. Topik: NASA; Space Exploration; Moon Mapping; Science and Technology Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.75 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel NASA's latest Moon mission ends with two bangs IF E BB and Flow do not sound like the sorts of names that scientists at NASA would give to their space probes, that is because they are not. The two probes started off as "GRAIL A" and "GRAIL B", but were renamed by a class of schoolchildren in Bozeman, Montana, who thus won a competition run by America's space agency to give the craft more resonant monikers than the original. Sadly, Ebb and Flow are no more. Ebb expired at 22:28:51 Greenwich Mean Time on December 17th and Flow at 22:29:21. Their mission over, NASA deliberately crashed them into a lunar mountainside. But the first results of that mission, the Gravity Recovery and Interior Laboratory to give its name in full, were published a few days before the crafts' demise. GRAIL was designed to study the Moon's interior by looking for anomalies in its gravitational field caused by variations in its topography and the density of its rocks. Such anomalies alter the orbits of satellites, and the instruments on board Ebb and Flow were exquisitely sensitive to them. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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