The Resilience crew includes Hopkins, an Air Force colonel, and two fellow National Aeronautics and Space Administration astronauts: mission pilot Victor Glover and physicist Shannon Walker.
The Crew-1 mission is the first one to bring astronauts to the ISS for a long-duration on a commercial spacecraft.
A SpaceX Crew Dragon is set to rendezvous and dock with the International Space Station for the third time later tonight and its four-astronaut crew took some time during their 27-hour flight to give live viewers a tour of the brand new spacecraft. They were mostly passengers during the flight of Crew Dragon, which generally flies without human input and docks to the ISS autonomously.
The crew is comprised of NASA astronauts Michael Hopkins, Shannon Walker and Victor Glover, and Japanese astronaut Soichi Noguchi.
The space station, an orbital laboratory about 250 miles (400 km) above Earth, will be their home for the next six months. The first flight, in May 2020, made history because it was the first time a private company had launched astronauts into Earth's orbit.
SpaceX and - eventually - Boeing will transport astronauts to and from the ISS as part of the Commercial Crew programme. Crew-1 follows a successful Demo-2 mission earlier this year and is the first crew rotation flight on a US commercial spacecraft.
This means NASA will no longer have to rely only on Russian Federation to take American astronauts to the space station. Though more than a dozen Black Americans have travelled to space since Guion Bluford became the first to do so in 1983, Mr Glover will be the first to become a full-time crew member on the ISS.
After the U.S. stopped its own launches in 2011 under then-president Barack Obama to focus on deep space missions, the country's space programme relied on hitching rides aboard Russian Soyuz rockets, at a growing cost. A video tweeted by NASA showed the space station crew cheering as they welcomed the newly arrived astronauts, hugging them as they floated through an open hatch.
Kate Rubins holds up a "Welcome Friends" sign after the new crew members exited the Crew Dragon spacecraft. Finally, the astronauts will make updates and repairs to the outside of the space station.
Looks like Baby Yoda has fled the Razor Crest to hitch a ride on NASA's SpaceX Dragon.