The Keck Observatory and NASA’s Hubble Space Telescope may have uncovered a "potential three-body system in the Kuiper Belt," ...

The author of Gemini: Stepping Stone to the Moon, The Untold Story talks about his new book.

The icy giant is more than 10 times the size of any known comet, according to the National Radio Astronomy Observatory.

The U.S. faces dangerous adversaries but has the tools to create a strong missile-defense system.

Group Capt. Shubhanshu Shukla of the Indian Air Force is one of four astronauts in the running to command the nation’s first human spaceflight, slated for early 2027. If successful, India would join ...

Space Rider is ESA's reusable spacecraft in development. It will be about the size of two minivans and will allow for many ...

NASA’s Space Launch System (SLS) is ready to fly with its four shuttle-era engines. The rocket, outfitted with the RS-25 ...

The H-2A rocket lifted off from the Tanegashima Space Center in southwestern Japan, carrying the GOSAT-GW satellite as part ...

In just over 26 hours - when the spacecraft docks at the International Space Station (ISS) - Group Captain Shukla will become ...