It was also the first pairing in space featuring a crewed spacecraft constructed by a private entity, the SpaceX company founded by the billionaire entrepreneur Elon Musk, who broke down in tears at a post-launch press conference on Saturday.
The launch was initially scheduled for Wednesday, but was scrubbed because of weather.
On the ISS, the astronauts will perform tests and join one United States astronaut and two Russians who are now onboard the station.
When Hurley and Behnken floated through, they were met by ISS Commander and fellow Nasa astronaut Chris Cassidy and Russian cosmonauts Anatoly Ivanishin and Ivan Vagner.
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The NYPD is obliged to keep peace, protect everyone and avoid anything that allows further violence to occur, said de Blasio . He said he had asked her to recount the whole story and that she assured him she was " acting peacefully ".
This mission is NASA and SpaceX's Commercial Crew Demo-2, which is the second demonstration mission of the full flight and return of the SpaceX Crew Dragon spacecraft, one of two vehicles commissioned by NASA from commercial partners to provide transportation serves for astronauts to and from the Space Station. "We're going to stay vigilant until we bring them safely home".
The mission comes amid the coronavirus crisis and protests in multiple United States cities over the death of a black man in Minneapolis while he was being arrested by a white police officer.
Trump first addressed the protests, saying he understood "the pain people are feeling" but that he would not tolerate "mob violence". Now it's not only the Russians flying to the ISS, but also the Americans.
President Donald Trump, who was at the Kennedy Space Center, said it was "beautiful".
The SpaceX Dragon Endeavour spacecraft made its "soft capture" docking with the International Space Station at 10:16 am ET after an nearly 19-hour journey to the orbiting space lab.
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In Minneapolis, there were reportedly 27 riot arrests between Friday and Saturday, with only three out-of-state arrests. Black lives matter", said makeup artist Melissa Mock, who joined several thousand in a daytime protest in Miami.
In a long-held tradition, the astronauts got to choose a name for their spaceship, and announced several hours after their spectacular lift-off from the Kennedy Space Center in Cape Canaveral they were honoring a shuttle orbiter they both flew aboard.
NASA had had to rely on Roscosmos, Russia's space agency, to get to the ISS since its final space shuttle flight in 2011, and Trump hailed what he said was the end of being at the mercy of foreign nations.
"Dragon was huffing and puffing all the way into orbit", he said. Both are supposed to be there for one and four months working.
Their successful arrival on the ISS marks a pivotal moment for Elon Musk's SpaceX, which built and guided the Crew Dragon spacecraft, and the Falcon 9 rocket which powered the guys into the sky.
The project has experienced delays, explosions, and parachute problems - but even so, SpaceX has beaten its giant competitor Boeing to the punch.
USA astronauts dock at ISS after SpaceX launch
Compared to the high drama of the launch on Saturday, the docking may have seemed like a slow burn. An initial launch attempt was scrubbed on Wednesday as a result of bad weather.