Former astronaut and Sen. Bill NelsonBill NelsonExpanded laptop ban alarms travel industry Why does air travel seem so miserable? Offshore drilling opponents gear up for Gulf fight 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.