Earth has had a quasi-moon hidden for 60 years, researchers discover
Researchers from Spain have discovered a quasi-moon, known as Apollo asteroid 2025 PN7, orbiting around Earth. This asteroid has been accompanying the Earth since the 1960s and is expected to remain in this orbit for the next 60 years. However, it is not a true moon, but rather an asteroid that orbits the sun in a way that it appears to be orbiting Earth from our perspective. 2025 PN7 is a member of the Arjuna asteroid belt, a group of near-Earth asteroids with Earth-like orbits. The quasi-moon was detected by the Pan-STARRS observatory in Hawaii on August 2nd, 2025, but it has been observed in archived images dating back to 2014. Despite its close proximity to Earth, 2025 PN7 is relatively small, measuring between 15 to 30 meters in diameter, and poses no threat to our planet.
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