Russian and US space experts were scrambling to address a "very serious" ammonia leak outside the International Space Station that may require astronauts to perform an emergency spacewalk, a Russian official said on Friday.
NASA and private sector experts now agree that a man or woman could be sent on a mission to Mars over the next 20 years, despite huge challenges.
Orbital Sciences, one of two private US firms chosen by NASA to shuttle cargo to the International Space Station, is preparing for the first launch of its Antares rocket Wednesday.
The budget proposal that US President Barack Obama released Wednesday would boost funds for major science and health programs while making cuts at NASA and the Environmental Protection Agency.
The US space agency on Wednesday denied a claim made in a scientific study that its Voyager 1 spacecraft had left the solar system, describing the report as "premature."
The 27th edition of South by Southwest kicked off Friday with a bold prediction that desktop 3D printing will unleash a new industrial revolution guided by "creative explorers."
A private Earth-to-orbit delivery service made good on its latest shipment to the International Space Station on Sunday, overcoming mechanical problems and delivering a ton of supplies with high-flying finesse.
NASA's Mars rover Curiosity has been temporarily put into "safe mode," as scientists monitoring from Earth try to fix a computer glitch, the US space agency said.
A privately-owned unmanned US space capsule neared the International Space Station early Sunday, preparing to dock to deliver food, scientific materials and other crucial equipment.
The International Space Station briefly lost contact with ground controllers on Tuesday because of a computer problem, but its commander said the crew was fine, NASA said.