Detail The problem of space pollution: Junk science   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 396 no. 8696 (Aug. 2010), page 61. Topik: Debris; Earth's Orbit; Spacecraft Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.62 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel FEBRUARY 10th 2009 began like every other day in Iridium 33’s 11-year life. One of a constellation of 66 small satellites in orbit around the Earth, it spent its time whizzing through space, diligently shuttling signals to and from satellite phones. At 3pm a report suggested it might see some excitement: two hours later it would pass less than 600 metres from a defunct communications satellite called Cosmos 2251. It did. A lot less. The two craft collided and the result was hundreds of pieces of shrapnel more than 10cm across, and thus large enough to track by radar—and goodness knows how many that were not. This accident came two years after the deliberate destruction by the Chinese of their Fengyun-1C spacecraft in the test of an anti-satellite weapon. That created over 2,000 pieces of junk bigger than 10cm, and an estimated 35,000 pieces more than 1cm across. Together, these incidents increased the number of objects in orbit at an altitude of 700-1,000km by a third (see chart). Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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