NASA Twitter follower Sarah Smith, Twitter handle @smith5se, asks a question at a Tweetup hosted by astronaut Ron Garan at NASA Headquarters in Washington, Tuesday, Feb. 14, 2012. Photo Credit: (NASA/Carla Cioffi)

International Space Station, ISS Advanced Colloids Experiment – Thermal 5-3, ACE-T5-3 Operations in the Telescience Support Center, TSC