Mike Massimino is a former NASA Astronaut, a New York Times bestselling author, a Columbia University professor, an advisor at The Intrepid Sea, Air and Space Museum, and a television personality. A spacewalker on the final two Hubble Space Telescope servicing missions, Mike and his crews traveled faster (Mach 26) and higher (350 miles) than any other astronauts in the 21st century while increasing the discovery capabilities of arguably the greatest scientific instrument ever built by a factor of 100. During the final Hubble servicing mission, Mike was faced with both success and life-threatening challenges as he performed the most intricate repair ever attempted in space. Mike set a team record for cumulative spacewalking time on a single space shuttle mission, was the last person to work inside of the Hubble Space Telescope, and was the first person to tweet from space. He persisted through three rejections over 7 years on his way to becoming an astronaut, including overcoming a medical disqualification by training his eyes and brain to see better.