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Reposted
Reposted
Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago.
April 20, 2025 at 5:00 PM
Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago.
Reposted
posting this today in honor of sagan 🥹🌌
December 20, 2024 at 9:13 PM
posting this today in honor of sagan 🥹🌌