Brendan Byrne

A planned spacewalk by two Russian cosmonauts has been called off after ground teams noticed a significant leak from one of the spacecraft docked at the orbiting International Space Station.

A rocket part set to slam into the far side of the moon Friday morning highlights the growing issue of space junk in orbit around Earth, experts say

Since touching down in Jezero Crater, NASA's Perseverance rover has already cached 6 samples that could one day be brought back to Earth. Astrobiologists hope they hold signs of past microbial life.

NASA announced 18 astronauts who will start training for the next moon mission. The mission will include the first woman to land on the moon in NASA's push for gender equality.

SpaceX's Crew Dragon capsule docked to the International Space Station — adding four astronauts to the crew of three already on board. It's the first full operational mission for the private company.

The NASA astronauts who flew on the SpaceX craft to the International Space Station in May returned to Earth on Sunday. They splashed down in the Gulf of Mexico due to bad weather in the Atlantic.

The Perseverance rover launches Thursday, the last of three missions leaving in July while the planets' orbits are favorable. It is carrying technology that doesn't often go to space: a microphone.

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.

NASA and SpaceX on Wednesday have aborted the launch of a spaceship that was supposed to deliver astronauts to the International Space Station.

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.