3-11 years
Solar system scale project-Surabaya Astronomy Club
어려움: ★
Terminador terrestre
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Solar eclipse information 04 January 2011
어려움: ★
Solar eclipse 04 January 2011(King Saud University; by A. Elmhamdi)
어려움: ★
Tales of the stars
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Astronomy picture of the day
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Cosmic Zoo
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Travel with NASA
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Antartica
어려움: ★
Understanding the midnight Sun
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Skies
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Constellations
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Astronomy softwares
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Astropuzzle
어려움: ★
Birthday stars
어려움: ★
The search for extraterrestrial intelligence
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Invent an alien
어려움: ★
Micro and macrocosmos
어려움: ★
Making a constellation slide
어려움: ★
Earth model
어려움: ★
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Reflections from the Moon
어려움: ★
Lunar phase viewer 2
어려움: ★
Lunar phase viewer 1
어려움: ★
Solar eclipses: a “scale model”
어려움: ★
Scale distances in the Solar system
어려움: ★