Scientists have finally decoded the mystery behind a whitish, grey patch that sometimes appears in the night sky alongside ...

So it can be seen slowly moving across the entire night sky with respect to the background stars—and it’s therefore Earth’s changing position in the solar system that is the biggest factor ...

A whitish, grey patch that sometimes appears in the night sky alongside the northern lights has been explained ... “You’d see ...

As of today Mars will reverse its apparent west-to-east movement in the night sky and begin moving from east-to-west against the background stars. This is called “retrograde motion” and it ...