3I/Atlas has passed perihelium and is becoming visible again although it seems to have changed colour , from green to blue.
There is also a suggestion of non-gravitational acceleration... ion thrusters ?
Quote:Recent observations of the interstellar object 3I/ATLAS show that it has developed a faint blueish hue, hinting at a potential colour change. This is the third time experts have seen the comet's colouring shift since it was discovered.
https://www.livescience.com/space/comets...third-time
There is also a suggestion of non-gravitational acceleration... ion thrusters ?