-
space exploration from 1609-1956
The first adsorbed layers of helium. -
space exploration from 1609-1956
Also Elastic Scattering of Electrons and Positrons. -
space exploration from 1981-present
First spacecraft beyond the orbit of Neptune (first spacecraft to pass beyond all Solar System planets) -
space exploration from 1981-present
First Infrared orbital observatory -
space exploration from 1609-1956
Also Coulomb Scattering of Relativistic Electrons. -
space exploration from 1609-1956
Also measurement of Heat Capacity of Microscopic Particles at Low Temperatures. -
space exploration from 1609-1956
Also theoretical Analysis of Buildup of Current in Transient Townsend Discharge. -
space exploration from 1957-1980
First ICBM -
space exploration from 1957-1980
First artificial satellite in Earth orbit -
space exploration from 1957-1980
First animal in orbit -
space exploration from 1957-1980
First solar probe -
space exploration from 1957-1980
First communications satellite (lasted 12 days)[1] -
space exploration from 1981-present
First Reusable manned spacecraft (orbital) -
space exploration from 1981-present
First Venus soil samples & sound recording of another world -
space exploration from 1981-present
Ultraviolet orbital observatory