The Universe Has Almost 10 Times More Galaxies Than We Thought
A new study finds there are about 2 trillion galaxies in the observable universe, up from about 200 billion. It's the first major revision to that number since the 1990s.
Đọc thêm tại NPR
at October 15, 2016 at 02:55AM
Health & Science
Thứ Bảy, 15 tháng 10, 2016
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