The first untethered spacewalk was by American Bruce McCandless II on February 7, 1984, during Challenger mission STS-41-B."3. April 4, 1984."US President Ronald Reagan calls for an international ban on chemical weapons."...
STS-41-B: Space Shuttle Challenger is launched on the 10th space shuttle mission. 12. STS-41-B: Space Shuttle Challenger makes the first shuttle landing at the Kennedy Space Center. 13. United States Marines pull out of Beirut, Lebanon....
11 Feb 1984 - For the first time, following the completion of STS41-B, the Space Shuttle landed at the Shuttle Landing Facility (SLF). Specifically designed for returning Space Shuttle orbiters, the SLF opened for business in 1976....
These cumulus thunderheads near São Paulo, Brazil, where photographed from almost directly overhead by the STS41-B crew. This perspective conveys something of the energy that drives these cloud columns to punch up into the atmosphere....