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14 cards from this deck
Earth
Up until the 1500s
Perfect circles
Sun
16th century
Four moons (Galilean moons)
Not everything orbits Earth
Elliptical (oval-shaped)
Universe has always existed & will always remain the same
New matter
Small, very dense, and hot space
13.8 billion years ago
Cosmic microwave background radiation & galaxies moving apart
Big Bang Theory
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