Longtime NASA astronaut Don Pettit, who has ventured to space four times, returned to Earth on Saturday night from the ...

It's not just Niagara Falls. Many states in the US have impressive waterfalls. Some require a hike, but others are easy to ...

If we had people living their whole life in orbit, when they come down to Earth, they would probably think that was the most beautiful perspective they’d ever seen.” Pettit takes his photos ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...