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Who is who? A short look at the most important facts and characters in the history of astronomy. |
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Who is who? find out about the most important facts and characters in the history of astronomy. |
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When is the
best time to observe the sky? If you remember this advice, your observations will be much better. |
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Advice for
observing the sky. Increase your knowledge to better observe the night sky. |
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Become a space
engineer and build these spaceships. Put each part in its place until you finish building the spaceships. |
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The spaceships. Activate the robots so they will transmit the information to the ships. |