Rep. Jim McGovern (D-Mass.) and Sens. Mark WarnerMark Robert WarnerLawmakers worry about rise of fake video technology Mueller indictment reveals sophisticated Russian manipulation effort GOP cautious, Dems strident in reaction to new indictments MORE (D-Va.) and Jeff MerkleyJeffrey (Jeff) Alan MerkleyGrassley, Dems step up battle over judicial nominees 2020 Dem contenders travel to key primary states Mulvaney remarks on Trump budget plan spark confusion MORE (D-Ore.) snapped pictures. Rep. Billy Long (R-Mo.) had "no time to get a picture" but tweeted the view was "very cool."

Rep. Tom Latham (R-Iowa) called it an "amazing sight." Rep. Martha RobyMartha Dubina RobyFormer Moore campaign manager to challenge GOP rep in Alabama Brooks’s prior attacks on Trump could hurt in Alabama Senate race How the GOP came to dominate, and be dominated by, rural voters MORE (R-Ala.) called it "amazing" that the Discovery traveled 149 million miles in space to make it to Washington.

Sen. John McCainJohn Sidney McCainLawmakers worry about rise of fake video technology Democrats put Dreamers and their party in danger by playing hardball Trump set a good defense budget, but here is how to make it better MORE (R-Ariz.) and his wife Cindy made it a family affair, camping out on the steps of the Capitol along with McCain's 100-year-old mother Roberta McCain, waiting for a sighting.

"I am so excited!" Cindy McCain tweeted.

And Sen. Barbara MikulskiBarbara Ann MikulskiDems ponder gender politics of 2020 nominee Robert Mueller's forgotten surveillance crime spree Clinton: White House slow-walking Russia sanctions MORE (D-Md.) took the opportunity to tweet a eulogy to Discovery and to America's ongoing "mission in space."

The retired space shuttle will ultimately be housed at the Smithsonian’s Steven F. Udvar-Hazy Center, an annex of the Smithsonian National Air and Space Museum in Virginia.