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Space / Astronomy

Interstellar Comet 3I/ATLAS Observed by Mars and Jupiter Probes

Spacecraft designed for Mars and Jupiter missions are observing interstellar comet 3I/ATLAS as it journeys through our solar system. Discovered in July 2025, 3I/ATLAS is only the third interstellar object known to pass through our cosmic ne...

Interstellar comet 3I/ATLAS will be eyed by Mars and Jupiter probes as it zooms past the sun this month
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Interstellar Comet 3I/ATLAS Observed by Mars and Jupiter Probes Image via Space

Key Insights

  • 3I/ATLAS was discovered in July 2025 by the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Chile.
  • Its trajectory and speed (around 130,000 mph) confirm its extrasolar origin.
  • Mars orbiters (Mars Express and ExoMars Trace Gas Orbiter) observed the comet in early October 2025.
  • The Jupiter Icy Moons Explorer (Juice) will observe 3I/ATLAS in November 2025, after its closest approach to the sun (perihelion).
  • Observing 3I/ATLAS during its active phase will help scientists understand its chemical makeup and compare it to comets formed in our solar system.

In-Depth Analysis

Interstellar comet 3I/ATLAS is providing scientists with a rare opportunity to study a visitor from another star system. Its discovery has prompted a coordinated effort by space agencies to observe the comet using various telescopes and spacecraft.

The European Space Agency (ESA) is utilizing spacecraft already in orbit around Mars and en route to Jupiter to track 3I/ATLAS. These missions will provide valuable data on the comet’s size, composition, and surface activity. The observations are particularly crucial during the comet’s perihelion, when the sun’s heat causes its ices to vaporize and stream into space.

Observations from the James Webb Space Telescope and Hubble Space Telescope have already provided initial insights into the comet’s properties. As 3I/ATLAS continues its journey through the solar system, scientists hope to gain a better understanding of its origins and how it compares to comets formed in our own solar system.

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FAQ

What is 3I/ATLAS?

3I/ATLAS is an interstellar comet, meaning it originated from outside our solar system.

How fast is 3I/ATLAS traveling?

Approximately 130,000 mph (219,000 km/h).

When will 3I/ATLAS be closest to the sun?

Around the end of October 2025.

Will 3I/ATLAS impact Earth?

No, 3I/ATLAS poses no threat to Earth or other planets in our solar system.

Takeaways

  • Interstellar comet 3I/ATLAS is being closely observed by spacecraft around Mars and Jupiter.
  • Scientists are eager to study its composition and compare it to comets in our solar system.
  • These observations may reveal insights into the building blocks of planetary systems across the galaxy.

Discussion

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Sources

Disclaimer

This article was compiled by Yanuki using publicly available data and trending information. The content may summarize or reference third-party sources that have not been independently verified. While we aim to provide timely and accurate insights, the information presented may be incomplete or outdated.

All content is provided for general informational purposes only and does not constitute financial, legal, or professional advice. Yanuki makes no representations or warranties regarding the reliability or completeness of the information.

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Always do your own research (DYOR) before making any decisions based on the information presented.