Stephen Clark - Page 1

EnlargeNASA/Isaac Watson The central piece of NASA's second Space Launch System rocket arrived at Kennedy Space Center in Florida this week. Agency...

Enlarge / Artist's illustration of the Chandra X-ray Observatory.NASA/MSFC NASA launched the Chandra X-ray Observatory 25 years ago this week, opening a...

Enlarge / A top-down view of United Launch Alliance's first Vulcan rocket before its liftoff in January.United Launch Alliance United Launch Alliance...

Enlarge / This artist's concept shows the possible appearance of ESA's RAMSES spacecraft, which will release two small CubeSats for additional observations at Apophis.https://www.esa.int/Space_Safety/Planetary_Defence/Introducing_Ramses_ESA_s_mission_to_asteroid_Apophis...

Enlarge / A drone shot looking down on SpaceX's Super Heavy booster during a test-firing of its 33 Raptor engines Monday. SpaceX ...

Enlarge / Heads of state pose for a group photo at an event Tuesday celebrating the 75th anniversary of NATO.Kevin Dietsch/Getty Images ...

Enlarge / Boeing's Starliner spacecraft on final approach to the International Space Station last month.NASA Before clearing Boeing's Starliner crew capsule to...

Enlarge / Europe's first Ariane 6 rocket lifts off from a new launch pad in Kourou, French Guiana.Jody Amiet/AFP via Getty Images ...

Enlarge / Four kerosene-fueled Reaver engines power Firefly's Alpha rocket off the pad at Vandenberg Space Force Base, California.Firefly Aerospace Welcome to...

Enlarge / A test version of Firefly's Miranda engine fires up on a test stand in Briggs, Texas.Firefly Aerospace BRIGGS, Texas—The new...