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Another example might be anomalies in planetary orbits that could be explained by a missing planet.
by analog31 3y ago
Another example might be anomalies in planetary orbits that could be explained by a missing planet.
- eigenket 3y agoThis is how Neptune was discovered, for example. Astronomers noticed Uranus was moving "wrong" based on their physics of the time and worked out where Neptune should be based on that. When they pointed their telescopes there they found it.