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07 Aug 2025, 19:36

Hubble Captured the Best Image of a Comet from Another System

  • The comet 3I-Atlas is the third known interstellar comet.
  • The nucleus size of the comet is estimated to be about 3.5 miles.
  • The comet will pass closer to Mars than to Earth.

Cape Canaveral, Florida. The Hubble Space Telescope has revealed the best image of a comet that originates from our solar system with another star. Recently, NASA and the European Space Agency published new photographs.

The comet, known as 3I-Atlas, was discovered last month with the help of the telescope in Chile. It is only the third known interstellar object that passes near Earth, and it does not pose a threat to our planet.

Initially, astronomers estimated the size of its icy nucleus to be a few miles (dozens of kilometers), but observations from Hubble suggested this size is closer to a maximum of 3.5 miles (5.6 kilometers). According to scientists, it could be as small as 1,000 feet (320 meters).

The comet is traveling towards us at a speed of 130,000 miles per hour (209,000 km/h), but it will pass closer to Mars than to Earth, maintaining a safe distance from both planets. It was located at a distance of 277 million miles (446 million kilometers) during the Hubble photography session a few weeks ago. The original telescope detected a thin halo around the nucleus, as well as traces of a tail.

Tags: Technology/Space

Articles on this topic:

  • apnews.com - Hubble Space Telescope takes best picture yet of the comet visiting from another solar system
  • abcnews.go.com - Hubble Space Telescope takes picture of comet visiting from another solar system
  • edition.cnn.com - Hubble offers sharp new view of interstellar comet