Astronauts from the International Space Station (ISS) have undertaken a spacewalk to install an Alpha Magnetic Spectrometer. The $2bn particle physics experiment will be fixed to the top of the ISS where it will undertake a comprehensive survey of cosmic rays. These are the high-energy particles that are accelerated in Earth's direction from all corners of the cosmos. Read more
STS-134 astronauts Mark Kelly, Greg Johnson, Mike Fincke, and Greg Chamitoff join Exp. 27 Flight Engineer Ron Garan in the ISS's Kibo laboratory to answer questions posed online and through social media for the Google Website.
Mission managers discuss the day's events aboard the ISS and Discovery, as well as look ahead at the next day's scheduled EVA by Steve Bowen and Al Drew; it'll be the second and final spacewalk by the two astronauts.
The "Johannes Kepler" Automated Transfer Vehicle-2 docked to the International Space Station on Feb. 24, eight days after its launch from Courou, French Guiana. ATV-2 is delivering more than seven tons of experiments, fuel, water, food and other supplies to the space station.
International Space Station Commander Scott Kelly talks with CNN Radio and KRIV-TV, Houston about the upcoming arrival of the final three Expedition 26 crew members at the ISS. Cady Coleman, Paolo Nespoli and Dmitry Kondratyev are set to join Kelly, Alexander Kaleri and Oleg Skripochkov on Friday.