Archive · 19 Sep 2025
Interstellar Comet 3I/ATLAS Brightens, Approaches Mars
Imagine a giant space snowball, Comet 3I/ATLAS, that came from far, far away.
It's getting brighter as it gets closer to the sun, just like comets do.
Scientists are watching it because it's acting a bit strangely, brightening faster than expected.
They spotted it earlier using telescopes and satellites.
The comet is traveling towards Mars, and scientists will use the opportunity to study it from different angles using equipment on the planet.
Some scientists think it might be an alien spaceship, but most believe it is a comet.
This comet’s journey is a chance to learn more about space and these icy travelers.
Interstellar Comet 3I/ATLAS is currently brightening.
The comet was initially observed in July and then later caught by NASA's TESS.
3I/ATLAS is of interstellar origin.
It will pass Mars on October 3, allowing for close observation.
Multiple missions are prepared to observe the comet near Mars.
- Who
- Interstellar Comet 3I/ATLAS
- What
- Is brightening and approaching Mars, prompting observations from various missions.
- When
- Observed brightening in mid-September, Mars flyby on October 3rd.
- Where
- Interstellar space, near Mars.
- Why
- Scientists are observing the comet due to its unexpected brightening and interstellar origin.
- Object Name
- 3I/ATLAS
- Discovery
- Asteroid Terrestrial-impact Last Alert System (ATLAS)
- Previous Observation
- NASA's TESS in May
- Closest Approach to Mars
- October 3rd
- Distance from Mars (on Oct 3rd)
- 29 million kilometers
- Closest Approach Distance
- 2.7 million kilometers