Memaparkan catatan dengan label astrology. Papar semua catatan
Memaparkan catatan dengan label astrology. Papar semua catatan
Khamis, Oktober 09, 2014
Selasa, April 12, 2011
On this day (April 12) in 1961, the Soviet Union launched the first man, Yuri Gagarin, into space.
View Yuri Gagarin and over 3,000,000 other topics on Qwiki.
Rabu, Februari 28, 2007
The top of the atmosphere
Click image to enlarge.
Atmospheric gases scatter blue wavelengths of visible light more than other wavelengths, giving the Earth’s visible edge a blue halo. At higher and higher altitudes, the atmosphere becomes so thin that it essentially ceases to exist. Gradually, the atmospheric halo fades into the blackness of space. This astronaut photograph captured on July 20, 2006, shows a nearly translucent moon emerging from behind the halo.
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