Exploring Space (Rustad)
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ebook
The Milky Way
by Martha E. H. Rustad
5
(2)
Did you know the Milky Way galaxy has 200 billion stars? Did you know light takes 100,000 years to travel across our galaxy? Find out more in The Milky Way.
ebook
NASA
by Martha E. H. Rustad
5
(1)
Did you know NASA builds robots? Did you know NASA has many ways to explore outer space? Find out more in NASA.
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