3I/ATLAS showed a complex tail structure early this morning of November 8, 2925. It was observed at 29 degrees elongation from the Sun. In July and August , other researchers calculated that 3I Atlas ...

NASA’s latest tracking data show that interstellar comet 3I/ATLAS is not just racing through the solar system, it is accelerating in a way that standard gravitational models struggle to explain. The ...

Since comet 3I/ATLAS, the third known interstellar object, was discovered on 1 July 2025, astronomers worldwide have worked to predict its trajectory. ESA has now improved the comet's predicted ...

Comet 3I/ATLAS is sweeping back into view for early risers, carrying fresh coordinates, new imagery and a rare chance to watch an interstellar visitor glide past our planet. As it nears its closest ...

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water relative to ordinary water in an interstellar object. Astronomers using the ...

I've taken incredible photos of this interstellar comet for more than a month using two tiny iPad-connected scopes in my windowsill. You can catch it too, if you act quickly. Since 2004, I have worked ...