What is 'Kessler syndrome'?
Scientists warn that space junk collisions could eventually trap us on Earth ...
A treasure trove of unseen stars beyond the 'Dragon Arc'
Looking halfway across the observable universe and expecting to see individual stars is considered a non-starter in astronomy ...
This is what the northern lights look like from space
NASA Astronaut Don Pettit captured the northern lights from space in footage released on Sunday (January 5). Pettit was above Eastern Canada when he orbited over the northern lights, also referred to ...