Though lined with high-tech equipment, Orion must also sustain four humans’ lives through 10 days.

“We’re going to the moon.” Reid Wiseman, the commander of Artemis II, said the words emphatically, his way of opening a news briefing last September. He may have practiced the line, but he said it ...

When fire breaks out in the low-gravity, high-stakes conditions inside spacecraft or space stations, it behaves very differently than back here on Earth. So, as humans aim to set foot on Mars in the ...

A view from above of Atlantis' 60-foot-long payload bay. Atlantis' aft section as viewed from the side. The reflective insulation would normally be covered by one of the shuttle's two orbital ...

The view of shuttle Discovery's payload bay from inside the orbiter, with the iconic American flag at the rear. The huge cargo area is 15 feet (4.6 meters) wide and 60 feet (18 m) long. When Discovery ...