This Day In History
This Day In History
Monday, December 9, 2019

«space station»

February 19, 1986

Space station «Mir»
Space station «Mir»
The Soviet Union launches its «Mir» spacecraft. Mir was a space station operated in low Earth orbit from 1986 to 2001, at first by the Soviet Union and then by Russia. Assembled in orbit from 1986 to 1996, Mir was the first modular space station and had a greater mass than that of any previous spacecraft, holding the record for the largest artificial satellite orbiting the Earth until its deorbit on 21 March 2001 (a record now surpassed by the International Space Station). Mir served as a microgravity research laboratory in which crews conducted experiments in biology, human biology, physics, astronomy, meteorology and spacecraft systems in order to develop technologies required for the permanent occupation of space.
Mir, space station, space

March 23, 2001

The Russian <i>Mir</i> space...
The Russian Mir space station is disposed of, breaking up in the atmosphere before falling into the southern Pacific Ocean near Fiji. Mir's deorbit was carried out in three stages. The first stage involved waiting for atmospheric drag to reduce the station's orbit to an average of 220 kilometres (140 mi). This began with the docking of Progress M1-5, a modified version of the Progress-M carrying 2.5 times more fuel in place of supplies. The second stage was the transfer of the station into a 165 × 220 km (103 × 137 mi) orbit. This was achieved with two burns of Progress M1-5's control engines at 00:32 UTC and 02:01 UTC on 23 March 2001. After a two-orbit pause, the third and final stage of Mir's deorbit began with the burn of Progress M1-5's control engines and main engine at 05:08 UTC, lasting a little over 22 minutes. Reentry into Earth's atmosphere (100 km/60 mi AMSL) of the 15-year-old space station occurred at 05:44 UTC near Nadi, Fiji. Major destruction of the station began around 05:52 UTC and the unburned fragments fell into the South Pacific Ocean around 06:00 UTC.
Mir, space station, space

April 19, 1971

Launch of Salyut 1,...
Launch of Salyut 1, the first space station. Salyut 1 (DOS-1) was the first space station of any kind, launched by the USSR on April 19, 1971. It was launched unmanned using a Proton-K rocket. Its first crew came later in Soyuz 10, but was unable to dock completely; its second crew launched in Soyuz 11 and remained on board for 23 days. A pressure-equalization valve in the Soyuz 11 reentry capsule opened prematurely when the crew was returning, killing all three. Following the accident, missions were temporarily suspended and the station was burned in the atmosphere purposely after a total of 6 months in orbit.
Salyut 1, space station, space
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