NASA is weighing the risk of adding astronauts to the first flight of its new megarocket, designed to eventually send crews to Mars.
Notable events in the history of human space exploration:
A Soyuz rocket lifted off on Friday from Europe's space base in French Guiana, placing into orbit six low-orbit satellites with military or joint military-industrial use.
Russia's space agency Roskosmos is considering ending a permanent human presence in space, an agency official said Wednesday following last week's crash of a supply ship delivering precious cargo to the ISS.
Efforts to resume contact with a Russian space mission to Mars stuck in Earth orbit after launch have failed and the probe must be considered lost, Interfax news agency reported Saturday.
China will attempt its first space docking between two unmanned vehicles this year, the first step in efforts to build a Chinese space station, a senior official said Friday.
The hatch slammed shut Tuesday behind six volunteers from Europe and Russia who will spend three months isolated in a capsule in Moscow to simulate conditions for a manned mission to Mars.
A brand new commercial cargo ship making its orbital debut experienced navigation system trouble Sunday, and its arrival at the International Space Station was delayed at least two days.
SpaceX on Saturday aims to become the first private company to send its own cargo ship to the International Space Station, a feat that only a handful of world governments have pulled off.
NASA has named low-cost missions to Venus, the moon and an asteroid on a shortlist to become its latest space adventure, as the US agency faces astronomical political pressure to cut costs.