Three NASA astronauts and one from Japan's space agency reached the ISS after a 27-hour flight following Sunday's liftoff from the Kennedy Space Center.
Four astronauts are scheduled to take a SpaceX capsule to the International Space Station on Saturday. NASA hopes to demonstrate the safety and reliability of regular crew transportation to the ISS.
Astronauts have been able to cast ballots from above since the Texas legislature gave its blessing in 1997. "It's critical to participate in our democracy," NASA astronaut Kate Rubins said.
An experiment involving some "mighty mice" on the International Space Station could someday help astronauts maintain muscle and bone strength on interplanetary journeys.
NASA and SpaceX are welcoming home two astronauts who splashed down safely in the Gulf of Mexico after several months on the International Space Station.
The two NASA astronauts who flew on the SpaceX craft to the International Space Station in May are scheduled to return to Earth on Sunday. But there's a hurricane forecast for the splashdown vicinity.
The docking came above China and Mongolia as the ISS was traveling at 17,000 mph. It docked 19 hours after the historic launch with NASA astronauts from the Kennedy Space Center.
When Doug Hurley launched aboard Atlantis on July 8, 2011, the future of human spaceflight from U.S. soil was uncertain. Nearly a decade later, the astronaut is piloting SpaceX's new Crew Dragon.
NASA and SpaceX plan to launch astronauts to the International Space Station on Wednesday. It'll be the first time a new kind of spacecraft has launched astronauts into orbit since the space shuttle.
The commercial rocket company sent its "Dragon" capsule from Cape Canaveral to the International Space Station on Friday for its 20th resupply mission. It's due to arrive at the space station Monday.
Forty mice spent more than a month in orbit to test two approaches to strengthening muscle and bone in microgravity conditions. The results could help people with muscle and bone diseases.
The journey is being hailed as a major achievement despite failing to complete a core objective: docking at the international space station. NASA hopes to launch U.S. astronauts in space in 2020.
After a flawless launch from Cape Canaveral, Fla., the crew capsule, loaded with 600 pounds of cargo for the station, was unable to reach its intended orbit, Boeing says.
Astronauts Christina Koch and Jessica Meir will replace a faulty power regulator on the International Space Station. Only 15 women have participated in spacewalks, and all were accompanied by men.
"That is a terrible, terrible thing to create an event that sends debris in an apogee that goes above the International Space Station," NASA Administrator Jim Bridenstine said.
Two female astronauts were set to become the first women to spacewalk together around the International Space Station this week. But they both wear medium spacesuits, and only one was space-ready.
Astronauts in the station opened Crew Dragon's hatch and entered the spacecraft on Sunday, in a significant moment for both Elon Musk's company and the future of commercial space exploration.
For years, NASA has had to rely on Russian vehicles to get astronauts to the International Space Station. That could soon change if the flight test of SpaceX's Crew Dragon capsule succeeds.
Kindergartners from Georgetown Day School in Washington D.C., help NPR's Lulu Garcia-Navarro field questions to McClain, who's an astronaut serving on the International Space Station.
Dutch astronaut André Kuipers made the extra-long-distance call by accident, but he was "disappointed" when emergency responders didn't show up at the International Space Station.
A Russian, an American and a Canadian were aboard the spacecraft when it lifted off from Russia's Baikonur Cosmodrome in Kazkahstan. It's the first launch since a failed mission in October.
