Former astronaut and Sen. Bill NelsonClarence (Bill) William NelsonSenate panel approves bill to speed up driverless cars Dems plan to make gun control an issue in Nevada Overnight Cybersecurity: Trump proclaims 'Cybersecurity Awareness Month' | Equifax missed chance to patch security flaw | Lawmakers await ex-CEO's testimony | SEC hack exposed personal data MORE (D-Fla.) offered praise for Monday afternoon's space shuttle launch on his Twitter page.

Nelson tweeted:
It was a flawless launch for what will be one of the most technologically challenging missions to repair & extend the Hubble space telescope


And added:
This mission will demonstrate the success of humans interacting with machines in space to discover the unknown.