Behind the Sun, the comet appears to show signs of acceleration beyond what is expected by gravity. And for reasons not yet ...

I/ATLAS is making headlines after new images show no sign of a comet tail. Here’s what Avi Loeb and scientists think about this mysterious interstellar visitor.

Interstellar object 3I/ATLAS baffles scientists with its unnatural acceleration and blue colour. Harvard's Avi Loeb suggests an 'alien engine' but NASA insists it's a comet.