Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.
There are 2759 entries in this glossary.| Term | Definition |
|---|---|
| Mercury 2 |
A series of American spacecraft capable of carrying one astronaut. The first American experiments in manned spaceflight used Mercury capsules, and the first suborbital flight, to an altitude of 187 kilometres 116 miles, was in 1961. The first orbital flight was made by John Glenn in February 1962.
|