What if Earth had two moons?

What if our Moon had a twin? Seeing not one, but two of these satellites in the night sky could be spectacular. Let's assume that our second moon is about 1,000 km (620 miles) wide and about one-thirtieth the mass of our current Moon. It would also be about the same distance from Earth. Just like the twin satellite that our Moon had 4.5 billion years ago.

Would we see this double moon from Earth? Absolutely! The second moon would simply appear about three times smaller. It would still be a spectacular sight.

Transcription and sources: https://insh.world/science/what-if-the-earth-had-two-moons/

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What if asks some of science's most provocative hypothetical questions – then attempts to answer them using established scientific theory and the latest research.

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