INTERNATIONAL SPACE STATION

Results indicate substantial loss of fibre mass, force and power in the muscles group translating into a 40 percent reduction in the capacity of an astronaut to do physical work.

Citigroup Inc raised its estimates and now expects to issue $18 billion to $21 billion in long-term debt in 2010, the company said in a regulatory filing on Friday.

The owners of Danish cleaning firm ISS have revived plans for a multi-billion euro flotation, asking banks to pitch for roles helping to list or sell the company, three people familiar with the matter said. The owners -- Goldman Sachs Capital Partners and Swedish private equity fund EQT Partners -- are seeking to start a dual-track process toward an initial public offering (IPO) or sale later this year, the sources said.

Russia announced a halt to space tourism on Wednesday, saying it would struggle to ferry professional crews to the International Space Station after the U.S. mothballs its shuttle fleet this year.

A Senate science subcommittee clashed with NASA's chief on Wednesday, saying the firm and the White House lacked a clear vision and goal for the program.

President Barack Obama on Wednesday said his commitment to NASA was unwavering after his administration's 2011 budget slashed funding to return U.S. astronauts to the moon.

The shuttle Endeavour crew bolted the last connecting module onto the International Space Station on Friday, completing more than a decade of major construction on the outpost.

The space shuttle Endeavour and its six astronauts arrived at the International Space Station on Tuesday, carrying the station's last two main components.

The U.S. space agency on Tuesday awarded $50 million in grants to five private firms in a first step to implement President Barack Obama's vision of turning over space transportation to the commercial sector.

NASA is set to receive a $6 billion fund injection over the next five years in a bid for ocompanies to develop rockets capable of taking astronauts to the International Space Station.

Twitter is proving to become an ever increasingly powerful tool of communication, even in space.

The shuttle Atlantis successfully blasted off into orbit Monday towards the International Space Station, carrying 15 tons of critical spare parts and equipment. Atlantis and its six-man crew launched as scheduled at 2:28 p.m. ET from the Kennedy Space Center in Florida. The mission trip's purpose is to deliver equipment, including two gyroscopes, to the International Space Station.

Space agencies and Google Inc are helping an international project to monitor forests by satellite to fight global warming, the head of an international earth observation group said on Tuesday.

Canadian circus billionaire Guy Laliberte, dubbed the first clown in space, arrived at the International Space Station in a Russian space craft on Friday on a 10-day trip that cost over $35 million.

Sometime in the next six years, astronauts bound for the International Space Station may find themselves strapped inside a private commercial spacecraft known as Dragon.

The Canadian billionaire founder of Cirque du Soleil said on Thursday he would fly into space later this month to show a fairy tale dream can come true -- and would put on a show while there.

NASA said Thursday it will attempt to launch space shuttle Discovery to the international space station late Friday night, after undergoing elays caused by bad weather and fuel valve trouble.

In an surprise move, the U.S. space program may turn to private contractors to most of the work now handled by government workers, officials say.

A Canadian astronaut aboard the International Space Station said on Sunday it looks like Earth's ice caps have melted a bit since he was last in orbit 12 years ago.

Microsoft Corp and Yahoo Inc are close to a long-discussed search and online advertising deal, which could be announced in the next week.

After six attempts, Space shuttle 'Endeavour' has finally blasts off safely for space station mission. The space shuttle Endeavour was successfully lifted up this evening at 6:03 P.M. EST on a mission to the International Space Station (ISS) from the Kennedy Space Center at Cape Canaveral in Florida.