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Mystery interstellar object could be oldest known comet

Mystery interstellar object could be oldest known comet

Summary

Astronomers have detected an interstellar object named 3I/ATLAS, which could be the oldest known comet. This object might be older than the solar system, and scientists are studying its path and characteristics.

Key Facts

  • 3I/ATLAS is an interstellar object discovered last week.
  • It may be three billion years older than our solar system.
  • It is only the third interstellar object detected.
  • The discovery was announced at the UK's Royal Astronomical Society meeting.
  • The object was first seen on July 1, 2025, by a telescope in Chile.
  • 3I/ATLAS could have originated from an old group of stars in the Milky Way.
  • As it gets closer to the Sun, it could create a glowing tail due to water ice vaporizing.
  • 3I/ATLAS should be visible later this year with amateur telescopes.
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