It's been more than 50 years since humans set foot on the Moon, but how much do you know about the lunar satellite?

International Space Station, where astronauts have lived and worked for 25 years, is visible to us on Earth. How to see it ...

Learn 25 amazing facts about time, from Einstein’s theories to mind-bending time quirks.

Experts considered a range of issues, including nuclear weapons, when deciding whether to move forward the clock.

San Jose is exploring the expansion of its multi-family incentive program and tax and fee reductions for some ...