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Avaruus koostuu pääasiassa ei mistään. Siellä täällä harvaan siroteltuina on toinen toistaan omituisempia kohteita: kvasaareja, mustia aukkoja, ruskeita kääpiöitä, komeettoja, …
Vanessa has been reaching for the stars since she was a little girl, and is determined to get into her dream Ivy League university to study astronomy.Zach is a talented artist, but …
The go-to guide to the stars for beginners and experts alike.With clear, readable text, easy-to-follow diagrams, and a sprinkling of H. A. Rey's irrepressible humor, The Stars: A …
Jefferson Cup Overfloweth Title Recollections from the sixth man to ever walk on the Moon, for young adult readers. On February 5, 1971, Edgar Mitchell jumped off the last rungs of …