"It's OK for astronauts to cry, right?" asked Mike Massimino, one of seven NASA astronauts who flew the space shuttle Atlantis on a daring mission to rescue the Hubble Space Telescope in 2009. The New York City native made his jest during a special preview screening of early footage from the upcoming Hubble 3-D IMAX film on Thursday, and all the reporters laughed. No one doubted his sincerity in describing his surge of emotion upon watching himself and his fellow spacewalkers floating on the big screen.