If it proves successful, CNTR could allow future vehicles to travel farther using less fuel. Traditional chemical engines produce about 450 seconds of thrust from a given amount of propellant, a ...

STATEN ISLAND, N.Y. — Imaginative minds have long pondered the possibility of time travel, but is it all just wishful thinking or is there any scientific evidence that mankind could travel into the ...

Four astronauts splash down off the Southern California coast after a five-month stay at the International Space Station. A NASA crew hadn't returned in the Pacific since 1975.