Craig Schafer will explain how microgravity affects humans in space.
Lesson helps are available .
Join NASA expert John Gruener to find out what they are learning about how to grow plants in space. Lesson helps are available . View the Archive Take a virtual tour of the ISS mockups and the astronaut training facilities. Olivas is currently assigned technical responsibilities within the Robotics Branch of the Astronaut Office. See lesson plans to help in preparation.