The National Aeronautics and Space Administration (NASA) successfully landed a six-wheeled rover named Curiosity on Mars at 1:39 a.m. Eastern time Monday morning.

Several members of Congress stayed up late to watch the event live, with Klobuchar, Rep. Donna Edwards (D-Md.), Rep. Adam SchiffAdam SchiffCongress to take up North Korea travel ban legislation as soon as next month: report It's time for Republicans to play offense while Democrats are weak Schiff: Obama's delayed response to Russian interference 'a very serious mistake' MORE (D-Calif.), Sen. Chris CoonsChris CoonsFuneral for the filibuster: GOP will likely lay Senate tool to rest Overnight Regulation: Labor groups fear rollback of Obama worker protection rule | Trump regs czar advances in Senate | New FCC enforcement chief Overnight Tech: Uber CEO resigns | Trump's Iowa tech trip | Dems push Sessions to block AT&T-Time Warner deal | Lawmakers warned on threat to election systems | MORE (D-Del.) and others tweeting in the early morning hours, several having watched from NASA locations.

Additionally, the Curiosity Rover — along with NASA staff members like Ferdowsi — live-tweeted the event in the first-person. “It once was one small step... now it's six big wheels. Here's a look at one of them on the soil of Mars,” Curiosity tweeted early Monday morning, along with a picture sent straight from Mars.

President Obama tweeted congratulations to NASA on the historic accomplishment. Many Democrats in Congress followed the president’s lead in emphasizing the government support of the mission, with Sen. Barbara MikulskiBarbara MikulskiBipartisan friendship is a civil solution to political dysfunction Dems press for paycheck fairness bill on Equal Pay Day After 30 years celebrating women’s history, have we made enough progress? MORE (D-Md.) tweeting her pride in “the civil servants at NASA.” Obama has taken heat in the past allowing NASA to end the space shuttle program during his presidency, but private funding has successfully paved the way to further developments in human spaceflight.

NASA Administrator Charles Bolden stressed the success of U.S. space exploration overall at a press conference heralding Curiosity’s success very early on Monday morning.

“Tonight, I’m probably not going to include the counties, at least 4 countries — and I won’t name them — who are on Mars, and they’re on Mars because they went with the United States,” Bolden said, according to reports. “I know this may sound a little strange in this international environment, but I want everyone to understand what I mean when I say our leadership is going to make this world better.”

Rep. Dennis Ross (R-Fla.) chimed in that the U.S. “can and must lead in Space. Always.”

Sen. Kay Bailey Hutchison (R-Texas) called it “a testament to #NASA’s engineering superiority.”