Fresh analysis now suggests that 3I/ATLAS may measure barely one kilometre across, an unexpectedly small nucleus given the ...

The third known interstellar comet to visit our solar system has just done something no one had seen before: it lit up in ...

Is 3I/ATLAS an alien probe? Breakthrough Listen uses the Green Bank Telescope to search for technosignatures as the ...

A new anomaly related to the size of particles in the interstellar object 3I/ATLAS has been detected. This was reported in his blog by Harvard University astronomer Avi Loeb.

Thirty years ago, astronomers weren’t sure planets beyond our solar system even existed. This year, NASA has confirmed its ...

Breakthrough Listen searched for technosignatures from interstellar comet 3I/ATLAS but found no unusual signals or behavior ...

Rare wobbling jets detected in interstellar comet’s sun-facing tail The first such outgassing seen in a comet from another star system Rotation clues reveal faster spin of comet’s icy core ...

Here is a look at just a few of the biggest developments in astronomy that The Debrief has been tracking in 2025.

Scientists tracked interstellar comet 3I/ATLAS and found rotating jets in a rare sun-facing tail during its 2025 pass through ...

Last Friday, the interstellar comet designated 3I/ATLAS completed its closest approach to Earth without crashing into us or depositing an invading armada.

From stranded astronauts to secret moons to space photos that were once impossible to consider, here are the top space ...

I/ATLAS may have moved away from Earth as it makes its way out of the solar system, but this interstellar intruder continues ...