Live coverage: Soyuz crew lands in Kazakhstan

After four years of brainstorming, custom tool development and training, two astronauts plan to venture outside the International Space Station Friday for the first of four spacewalks to repair a $2 billion cosmic ray detector. The excursions are considered the most challenging since work to service the Hubble Space Telescope.

Engineers have put the finishing touches on a prototype spaceship representing a leap in European space technology, aiming for liftoff Feb. 11 for a flight 260 miles into space and back to Earth for a pinpoint splashdown in the Pacific Ocean.

Former Johnson Space Center Director Christopher Columbus Kraft Jr., the man who created the iconic role of NASA flight director during the Mercury and Gemini programs and whose no-nonsense, uncompromising management style defined control room operations and discipline through the Apollo years and beyond, died Monday. He was 95.