A "monster" planet, which should in theory not exist, has been discovered orbiting a faint dwarf star far, far away, surprised astronomers said Tuesday.
The existence of the gassy giant challenges long-standing theories that such a big planet -- about the size of Jupiter -- cannot be formed around a star so small.
The star has a radius and massRead more
The mass of "space junk" orbiting the Earth poses a serious threat to future exploration, a British scientist said on Friday at the launch of a project to raise awareness of the issue.
"Tackling the problem of space debris is one of humankind's greatest environmental challenges, but is also perhaps the one that is the least known," said Hugh Lewis,Read more