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At any one time the Earth is estimated to have around a thousand “mini moons” in orbit around it.

According to researchers:

We estimate that there are one or two washing machine-size mini-moons and about a thousand larger than a softball [orbiting Earth] at any time.

While many more mini moons captured by Earth’s gravity are too small to be accurately counted, the larger ones, on account of their erratic orbits and mass, occasionally crash through the atmosphere and create brilliant fireballs.

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