Exo-Planets: Planets Beyond Our Solar System
(3.94 with 9 reviews)
36
students
2.4 hours
content
Jan 2025
updated
$14.99
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Messages from Aliens? Crop Circles; Signs of Hope
(4.92 with 69 reviews)
249
students
Little Green Men: The Search for Life Beyond Earth
(4.90 with 5 reviews)
Star Wars, Planetary Science, Aliens, and Astrobiology
(4.06 with 8 reviews)