Former astronaut and Sen. Bill NelsonClarence (Bill) William NelsonThe five kinds of Republicans who could primary Trump Overnight Tech: Senate confirms two FCC commissioners | Dems want more time on net neutrality | Tech groups push White House on 'startup visa' Senate confirms two new FCC commissioners 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.