"I think it was an argument that the return is more risky in some ways than the ascent, so in order to declare victory yet, we need to bring them home safely [and] make sure that we're doing everything we can to minimize that risk of reentry and return", Musk said. Please see our Privacy Notice for details of your data protection rights.
Trump, who observed the launch, said the United States had regained its place as the world's leader in space, that us astronauts would soon land on Mars, and that Washington would soon have "the greatest weapons ever imagined in history".More news: India to loosen lockdown despite record cases
Both AC/DC and Black Sabbath's iconic tunes played during the mission saw themselves as quite fitting, with "Back In Black" serving as an anthem for the space program comeback, as this joint mission between Elon Musk's SpaceX company and NASA is the first mission of its kind from the United States since 2011. Now it's not only the Russians flying to the ISS, but also the Americans. We will test two new rockets this year, and next year we will resume our lunar programme.
Roscosmos spokesman Vladimir Ustimenko described Trump's rhetoric as "hysteria".
The SpaceX Falcon 9 rocket carrying NASA astronauts Robert Behnken and Douglas Hurley aboard the company's Crew Dragon spacecraft launched from Kennedy Space Center's historic Launch Pad 39A at 3:22 p.m. EDT.
After making initial contact with the ISS, Crew Dragon went through a series of steps to further mate the spacecraft with its port - including linking power and creating an air-locked seal - before first of two hatches were opened.More news: Music composer Wajid Ali of Sajid-Wajid duo passes away
He added: "Bob and Doug, glad to have you as part of the crew".
The BBC reports that Behnken described himself and Hurley as well-rested, having caught around seven hours of sleep inside the capsule.
He described Dragon as a "slick vehicle" and said the two men had had "an excellent evening".
The idea of a crewed mission to Mars has been mooted since the 1950s, and NASA has commissioned numerous studies that have never gotten off the ground. From now on, the space agency will no longer own the rockets that it used to reach the cosmos.More news: Salt Lake City Man Threatens Protesters With Compound Bow