Scientists have found evidence for a cosmic collision in the Perseus cluster, a group of thousands of galaxies not far from ...

float freely in orbit – to space-walk. He was pilot of the Voskhod 2 mission, part of the Soviet Union’s attempt in competition with the US to reach the moon. Leonov’s walk on 18 March 1965 ...

However, those who are afraid of heights might want to forgo walking across the glass floor. The bridge is open daily from 9:30 a.m. to 6 p.m. (with the last entry at 5 p.m.). You can walk across ...