Detail The Real Star War; Asteroid Defence   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 406 no. 8824 (Feb. 2013), page 16. Topik: International; Meteors & Meteorites; Security Systems; Sensors Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.75 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel In 1908 a rock the size of a city block hit the Earth's atmosphere at 15km (9 miles) a second. The explosion flattened an area the size of London. But the land in question was in Siberia, so few people noticed and those who did had little influence. Well, it has happened again, when a meteor crashed in the Urals on February 15th, injuring more than 1,000 people. Moreover, on the same day another, larger rock called 2012 DA14 passed within 27,000km of Earth. It is time to think seriously about stopping such incidents by building a system that can detect space rocks with sufficient warning, and then either blast them or push them out of the way. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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