Skylab EVA, Hungarian stamp, 1977.

These Stamps Hail The Skylab Missions In 13 Awesome Ways

Spaces On Earth Where No One Can Hear You Scream

Two female NASA employees and the Intelsat IV satellite in an anechoic chamber, July 5, 1972. Photo: NASA.

Space is depressing as hell.

Space Suit by Garrett Corp Crew Systems EVA Branch. Via SDASM

General Dynamics Lunar Excursion Module (LEM) proposal. Via SDASM.

The Mobile Service Structure moves away from the Skylab 4 space vehicle the night before the launch. Skylab 4 launched on Nov. 16, 1973. The crew - Commander Gerald Carr, Mission Pilot William Pogue and Edward Gibson - spent 84 days aboard the station. Image credit: NASA. 

In Memoriam Challenger, 1986. január 28.

In Memoriam Challenger. Hungarian block of stamp, FDC.

Apollo 16 lunar rover ride.

via NASAHD (animgif: scanzen)

The X-2 (46-675) with a collapsed nose landing gear, after landing on the first glide flight at Edwards Air Force Base,  June 27,  1952.  The aircraft pitched at landing, slid along its main skid and contacted the ground with the right wingtip bumper skid causing it to break off. The nose wheel had collapsed upon contacting the ground. Test pilot: Jean L. “Skip” Ziegler. Photo: NASA/DFRC.