Mystery comet hurtles across space to Earth

A MYSTERY UFO with a green glow has been spotted flying past Mars as it heads closer to Earth.

- by CLAUDIA TROTMAN

Harvard professor Avi Loeb claims the object is an alien spaceship on its way to Earth.

But, Nasa believes 3I/ATLAS is a hyperbolic interstellar object, which means it originated outside our solar system and is merely passing through.