Big Picture Science – Getting a Spacelift: Shannon Walker
by Gary Niederhoff on February 6, 2012
Part 2 of Getting a Spacelift, featuring Shannon Walker, NASA Astronaut, discussing how her work at the Aquarius Underwater Laboratory will prepare astronauts for missions to low gravity asteroids. (TRT 9:09)
There's a new big dipper in the nighttime sky.
No, it's not a cozy constellation, but a distant, non-descript star that behaves like a shipboard semaphore, beaming flashes of light into the cosmic darkness that seem random, but... (read more)