26 February
1966: On 26 February 1966, the first Saturn 1B rocket was launched.
02 HELMI. 2005
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908
Katselukerrat
2004: On 27 February 2004, the launch of ESA's Rosetta spacecraft was delayed.
The reason it was delayed by a few days was to allow for a minor repair to the external thermal protection on Ariane 5 launcher’s core cryogenic stage.
A visual inspection of the cryogenic core stage detected that a 10 X 15-cm piece of the protection was missing, giving reason for the countdown to be stopped. The inspection was made prior to the start of the stage’s fuelling. This thermal protection insulates the stage’s cold cryogenic propellants against the warmer external environment.
To replace the missing piece of insulation, Ariane 5 would be moved on its mobile launch table back to the Spaceport’s Final Assembly Building, where a new block of thermal protection would be installed. Once the new piece was in place, the adhesive required approximately 36 hours for its drying/curing process.
Rosetta was finally launched on 2 March 2004.
Mediamodaali
25 February
1616: On 25 February 1616, Galileo renounced his theory that Earth orbits the Sun.
24 February
1968: On 24 February 1968, the journal Nature carried the announcement of the discovery of pulsars.
23 February
2004: On 23 February 2004, the final pre-launch activity on the ESA Rosetta spacecraft took place.
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