February 19, 19865 MIN
MIR LIFTS OFF: SOVIET UNION LAUNCHES ORBITAL OUTPOST CORE
The Soviet Union has today successfully launched the core module of what is expected to be humanity's first continuously inhabited orbital outpost.
SPACE EXPLORATION
February 18, 19305 MIN
NINTH PLANET DISCOVERED: LOWELL OBSERVATORY LOCATES LONG SOUGHT WORLD BEYOND NEPTUNE
A young astronomer at the Lowell Observatory identifies the theoretical Planet X using specialized photographic techniques.
February 17, 19595 MIN
VANGUARD II LAUNCHED: FIRST WEATHER SATELLITE ENTERS EARTH ORBIT
The United States successfully launches Vanguard II, a pioneering satellite designed to scan Earth's cloud cover from space.