The finding is significant because the internal composition of 3I/ATLAS could suggest that the planetary system from which it originates has a unique chemical makeup.

I/ATLAS shows signs of alien engine and non-gravitational acceleration as it passes near the Sun, drawing global attention ...

It happens because radiation from the sun causes solid ice to transform straight into gas, a process called sublimation. This ...

The comet has changed its physical appearance as it hurtled through space being tracked continuously by researchers on Earth ...