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Laura Nicole Driessen, Postdoctoral Researcher in Radio Astronomy, University of Sydney

HISTORICAL FACTS: Is it aliens why that s the least important question about interstellar objects - Caught on Camera

Interstellar comet 3I/ATLAS, captured by NASA's Hubble Space Telescope captured on July 21 2025. NASA, ESA, David Jewitt (UCLA); Image Processing: Joseph DePasquale (STScI)

On October 29, Comet 3I/ATLAS reached its closest point to the Sun.

This point, known as perihelion, was around 210 million kilometres from the Sun, or 1.4 times the distance between the Sun and Earth, and it was on the opposite side of the Sun to Earth. This means the Sun has been blocking the comet from our view (from Earth). There are already reports it’s been detected again using ground-based telescopes.

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