"IMAX: Hubble 3D" debuts at the Air and Space Museum...we give it the "red carpet" treatment - checking out the movie, checking in with the astronaut stars, listening to the star who voiced it over - Leonardo DiCaprio, and weighing in with the director and the NASA brass about the wow-factor of the IMAX experience. Also: a Falcon 9 "hot fire" disappoints, the shuttle program manager says "no problem" for shuttle to keep flying, and safely -- it's only a question of money -- and Obama gets ready to speak up for his controversial new plan for NASA...and braces for what promises to be a firestorm of protest at planned April 15 conference on the future of America's space program.