Space is getting crowded — humans have now placed over 20,000 satellites into orbit since the start of the space age, and ...

Four astronauts, including NASA astronauts Butch Wilmore and Suni Williams, made a splash landing off the Florida coast ...

Bothell, Wash.-based Portal Space Systems shows off the lab where its solar thermal propulsion system will be developed.

Here's how astronauts Butch Wilmore and Suni Williams physically managed to last 10 month at the International Space Station.

As astronaut Sunita Williams finally heads back to Earth after more than nine months in space, her hometown in Needham is ...

Wilmore and Williams, both ex-Navy pilots and veterans of two previous space missions, flew to the orbital lab in June last ...

If we achieve advanced nuclear, antimatter propulsion or other advance propulsion it would be possible to achieve near ...

Two NASA astronauts have splashed down off the Florida coast after a marathon mission that started with a bungled Boeing test ...

Astronauts return to Earth after a months-long unexpected stay on the ISS due to technical issues with Boeing's Starliner.

Voyager 1 and Voyager 2 are both exploring uncharted territory in interstellar space. Engineers at NASA’s Jet Propulsion ...

Ursa Major, which has been cutting its teeth developing solid rocket motors and liquid rocket engines, has received a contract from an undisclosed ...

On Episode 152 of This Week In Space, Rod Pyle and Tariq Malik host Dr. Robert O'Brien, Director of the Universities Space ...