Astronaut uses Twitter to detail training

"A U.S. astronaut says he's using #Twitter to detail his last weeks of training for the fifth servicing mission to the Hubble Space Telescope. Astronaut Michael Massimino - whose Twitter username is Astro_Mike (@Astro_Mike) - will fly aboard space shuttle Atlantis during the STS-125 mission, scheduled to be launched May 12. The 11-day flight will include five spacewalks to refurbish and upgrade Hubble with state-of-the-art science instruments designed to extend the telescope's lifetime through at least 2014." - UPI