Obama's proposed budget does not include funds for Constellation program
Manned space exploration may become a casualty of Washington politics. Kris Gutierrez reports the Obama administration is cutting funding for America's return to the Moon.
Second man to walk on the moon defends NASA's fire rocket
Astronaut Gene Cernan weighs in on Obama eliminating funds for manned lunar missions
Controversy over retiring the space shuttle
Watch launch of shuttle Atlantis ISS mission