Former astronaut and Sen. Bill NelsonBill NelsonTakata executives indicted over defective airbag charges Five takeaways from Chao’s confirmation hearing Chao commits to multiple funding tools for Trump’s infrastructure plan 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.