Dark energy, the mysterious phenomenon that powers the expansion of the universe, may undergo periodic 'violent transitions' ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Mashable is a global, multi-platform media and entertainment company.

Mashable is a global, multi-platform media and entertainment company.

Credit: Blue Origin Here's a round-up of space missions and cosmic events just around the bend. Bookmark this calendar and look for updates from Mashable throughout the year. SEE ALSO: NASA leader ...