Activities: Universe
Constellations
Dificuldade: ★
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Astronomy softwares
Dificuldade: ★
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Astropuzzle
Dificuldade: ★
Birthday stars
Dificuldade: ★
The search for extraterrestrial intelligence
Dificuldade: ★
Invent an alien
Dificuldade: ★
Micro and macrocosmos
Dificuldade: ★
Making a constellation slide
Dificuldade: ★