According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...
A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...
Space-based solar power is emerging as a potentially transformative clean energy technology that could drastically cut ...
It will be several years before any of these new commercial space stations circle the Earth at around 17,500 miles per hour ...
Sean Duffy, the acting NASA Administrator, discusses the future of space exploration including putting a man on Mars.