Don Pettit, along with two Russian cosmonauts, touched down in Kazakhstan Saturday evening after a 220-day mission abroad the International Space Station.

A Soyuz capsule carrying two Russian cosmonauts and one American astronaut safely landed Sunday in Kazakhstan, concluding a 220-day mission aboard the International Space Station

Russian cosmonauts join veteran spacefarer after 220 days aboard ISS.

NASA astronaut Don Pettit celebrates his 70th birthday with a spectacular return from the International Space Station after 220 days in orbit.

The nominee for NASA's top job is outlining his vision for space exploration

Astronomers have gotten a glimpse of the "city-killer" asteroid before it disappears until 2028, according to NASA.

Astronaut Suni Williams spent an unexpected nine months in space. When she finally came home, her two dogs were so excited to see her. "Best homecoming ever," she captioned the video.

ABC News' Gio Benitez spoke with NASA astronauts Barry "Butch" Wilmore, Sunita "Suni" Williams and Nick Hague about their return to Earth.

NASA astronaut Butch Wilmore, who was in space for more than nine months, said everyone has responsibility for things that went wrong with Starliner's test flight

NASA's Barry "Butch" Wilmore and Sunita "Suni" Williams were scheduled to return to Earth in June 2024 but spent an unplanned nine months in space.

NASA's Butch Wilmore said there was a responsibility with NASA and Boeing, including himself for issues with the Starliner mission.

NASA astronaut Don Pettit designed the Capillary Cup to drink coffee without a bag and straw aboard the International Space Station.

Firefly Aerospace and NASA released the photos taken by Blue Ghost lander on Tuesday.

The last Boeing Starliner mission was extended from eight days to over nine months due to capsule issues after docking at the International Space Station.

A space robot said "goodnight" to the moon as it completed its mission, capturing the first high-definition images of a lunar sunset before it fell silent.

NASA astronauts are returning to Earth after nine months in space. Experts have said a prolonged period in space can come with changes to human physiology and psychology.

A pod of dolphins circled the NASA astronauts' capsule after it successfully splashed down off the coast of Florida.

It was supposed to be an eight-day mission, but after over nine months in space, NASA astronauts Suni Williams and Butch Wilmore are back on earth.

SpaceX Dragon Freedom splashed down off the coast of Florida, carrying Sunita 'Suni' Williams and Butch Wilmore along with NASA astronaut Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov.

A four-member crew, including NASA astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore, left the ISS early Tuesday on a SpaceX Dragon spacecraft.

Sunita “Suni” Williams and Barry “Butch” Wilmore performed the first astronaut-crewed flight of Boeing’s Starliner capsule in June 2024.

ABC News’ Stephanie Ramos speaks with retired NASA astronauts Cady Coleman and Dr. Scott Parazynski about their emotional and physical reactions upon returning to Earth after months in space.

Two NASA astronauts returned to Earth on Tuesday after spending nine months at the International Space Station, which was initially intended to be a weeklong assignment.

NASA astronauts Butch Wilmore and Suni Williams have officially returned to Earth after an unplanned nine months in space, here's how Boeing's Starliner mission unfolded.

Space industry expert Eric Ingram breaks down the journey back to earth for astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore since departing the ISS.

NASA's Barry "Butch" Wilmore and Sunita "Suni" Williams were scheduled to return to Earth in June 2024 but spent an unplanned nine months in space. Here's how Boeing's Starliner mission unfolded.

ABC News’ Terry Moran speaks to space industry expert Eric Ingram about SpaceX’s launch of astronauts to the International Space Station to relieve two Americans whose trip was extended unexpectedly.

With the hydraulic issue that postponed the Starliner mission on Wednesday fixed, astronauts Barry "Butch" Wilmore and Sunita "Suni" Williams are one step closer to coming home. 

NASA astronauts Barry "Butch" Wilmore and Sunita "Suni" Williams are closer to getting home, nine months after arriving on Boeing’s Starliner. A capsule is set to arrive at the space station Thursday.

Former NASA astronaut Charles Camarda discusses the investigation into the recent SpaceX explosion and astronauts Sunni and Butch’s long-awaited homecoming.

Singer Katy Perry is scheduled to blast off on the next launch of Jeff Bezos' Blue Origin rocket, according to the space company.

The asteroid, discovered just after Christmas and named 2024 YR4, could strike the planet in December of 2032, according to NASA's Center for Near Earth Object Studies.

The chances of an asteroid striking Earth within the next decade has more than doubled in a matter of weeks, according to NASA astronomers.

The asteroid, discovered just after Christmas and named 2024 YR4, could strike the planet in December 2032 as it approaches during another journey around its orbit, according to NASA.

Williams has broken the record for the most total spacewalking time by a woman, making her ninth spacewalk.

Last year, 2024, was the warmest year on record for the planet, easily breaking the previous record set just a year earlier.

NASA announced Tuesday that it is exploring two options to move forward with its mission to return samples from Mars at a lower cost.

NASA's James Webb Space Telescope has captured a unique image that revealed 44 individual stars in a galaxy 6.5 billion light-years away from the Milky Way.

Aerospace engineer and citizen astronaut Aisha Bowe discusses making her dreams come true aboard her upcoming Blue Origin spaceflight.

NASA’s Nicki Rayl discusses the Parker Solar Probe, an “engineering marvel” that will become the closest any human-made object has been to the sun.

A trifecta of stargazing events could be visible in the night sky this weekend.

NASA astronaut Dr. Charlie Camarda discusses the dangerous leak on the International Space Station and how Donald Trump and Elon Musk may change NASA space policy.

The station has been leaking air for five years, and NASA is concerned that this might indicate a potential failure in the structural integrity of the International Space Station.

NASA is gearing up for its Parker Solar Probe to do a final flyby of Venus on Wednesday on its way to make a record-breaking attempt to get close to the sun.

NASA is gearing up for its Parker Solar Probe to do a final flyby of Venus on Wednesday on its way to make a record-breaking attempt to get close to the sun.

A NASA astronaut who experienced a "medical issue" and was hospitalized after partaking in the successful Space X Crew-8 mission has been released, NASA officials said.

The spacecraft will complete nearly 50 flybys of the Jupiter moon of Europa to determine if there are conditions suitable for life.

NASA's Europa Clipper is set to launch on Oct. 14 from NASA’s Kennedy Space Center in Florida.

Elon Musk’s SpaceX was selected to bring home NASA's astronauts Butch Wilmore and Suni Williams.

NASA launched SpaceX craft Saturday afternoon, as part of its mission to head to the International Space Station and bring back two stranded astronauts back to Earth.