See how the first human spaceflight actually occurred when the Soviet Union launched cosmonaut Yuri Gagarin on Vostok 1 on April Yuri Gagarin orbited the Earth for 108 minutes to usher in the age of human spaceflight
épinglé par Astronomical Events Check out our calendar of some of astronomical events for sky watchers. Most of these natural occurrences can be observed with the naked eye but use a pair of binoculars or a telescope for best viewing.
The age of the universe and its vast number of stars suggests that extraterrestrial life should be common. If that’s the case, then where is everyone? In this infographic we explore some possibilities.