If you have rheumatoid arthritis symptoms, tai chi exercises are a great way to stay physically active while improving mobility and balance. Find out why tai chi is so beneficial and try movements specially selected for people with RA... During a flare-up of rheumatoid arthritis symptoms, pain and fatigue make exercise the last thing you want to do.
This is a chronological list of spaceflights to the International Space Station (ISS), including long-term ISS crew, short term visitors, and mixed human/cargo missions. Unmanned visiting spacecraft are excluded (see List of unmanned spaceflights to the ISS for details). ISS crew members are listed in bold. Time docked refers to the spacecraft and does not always correspond to the crew.
NASA is sending astronaut Scott Kelly to live on the International Space Station for a year. That's the longest any U.S. astronaut has spent in space and twice as long as crew members usually stay on the space station. A year is a long time to stay anyplace. But staying a year in space has some special challenges.