Get all your news in one place.
100's of premium titles.
One app.
Start reading
International Business Times UK
International Business Times UK
Thea Felicity

3I/ATLAS is Bluer Than the Sun: New Observations Defy Earlier Color Data

Hubble captured this image of the interstellar comet 3I/ATLAS on July 21, 2025, when the comet was 277 million miles from Earth. Hubble shows that the comet has a teardrop-shaped cocoon of dust coming off its solid, icy nucleus. (Credit: NASA, ESA, David Jewitt UCLA/NASA)

New space-based images reveal that 3I/ATLAS has become dramatically brighter and bluer than the Sun as it neared its closest approach, or what scientists call 'perihelion', on 29 October 2025.

Although the object is currently hidden from Earth-based telescopes due to its position behind the Sun's glare, several space observatories have continued tracking it. These include NASA's STEREO-A spacecraft, the SOHO observatory, and GOES-19, a weather satellite equipped with a compact solar camera.

Sign up to read this article
Read news from 100's of titles, curated specifically for you.
Already a member? Sign in here
Related Stories
Top stories on inkl right now
One subscription that gives you access to news from hundreds of sites
Already a member? Sign in here
Our Picks
Fourteen days free
Download the app
One app. One membership.
100+ trusted global sources.