The Polaris Dawn spacecraft has reached a significant altitude, with reports indicating it has traveled 1,400 km above earth, although one outlet suggests it has reached 870 miles from earth, which is a new record for the highest orbit achieved by humans. The crew, composed of civilians, has completed a spacewalk, which is considered a historic milestone. The mission has achieved several firsts, including the first all-civilian spacewalk, and has traveled farther in space than any humans in decades.