Passing at an altitude of just 265 miles (428 kilometres), the asteroid came closer to the Earth's surface than the orbit of the International Space Station.
A huge asteroid came within 300 miles of hitting Earth, and scientists only noticed after it had already skimmed past the planet.
The 9.8-foot (three metre) space rock, dubbed 2025 TF, flew over Antarctica in the early hours of October 1.
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