Detail The Dark Side of the Universe: Cosmolgy   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 402 no. 8772 (Feb. 2012), page 64-66. Topik: International; Cosmology; Space Exploration; Astronomy Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.70 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel It has been known since the late 1920s that the universe is getting bigger. But it was thought that the expansion was slowing. When in 1998 two independent studies reached the opposite conclusion, cosmology was knocked head over heels. Since then, 5,000 papers have been written to try to explain (or explain away) this result. Many of those 5,000 papers deal with something that has come to be known as dark energy. One reason for its popularity is that, at one fell swoop, it explains another big cosmological find of recent years. In the early 1990s studies of the cosmic microwave background (CMB), an all-pervading sea of microwaves which reveals what the universe looked like when it was just 380,000 years old, showed that the universe, then and now, was flat. However big a triangle you draw on it--the corners could be billions of light years apart--the angles in it would add up to 180{degree}, just as they do in a school exercise book. That might not surprise people whose geometrical endeavors have never gone beyond such books. But it surprised many physicists. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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