... Space History . Introduction . Rocket History . Early Astronauts . Automated Spacecraft . Hypothetical Planets . Chronology of Space Exploration . ...
... N 81 is the 81st nebula cataloged in a survey of the SMC carried out in the 1950's by astronomer Karl Henize, who later became an astronomer-astronaut who flew into space aboard NASA's space shuttle. ...
... conservative assumption that, in the event of a Rover breakdown, the astronauts would be able to maintain an average walking speed of 2.7 km/hour, about half the running speeds achieved by several of the astronauts over distances of a hundred meters or so ...
... The image was taken on March 6, as part of the recommissioning of the Hubble Space Telescope's previously installed scientific instruments following the successful servicing of the HST by NASA astronauts in February. ...
... Mars Multi-Scale Map (from LANL) html . Chesley Bonestell paintings of Mars . PDS Mars Explorer for the Armchair Astronaut . Viking CDROMs html . ...
... As a result, hot gas streams out into the Solar System , impacting planets , moons, spacecraft, and making space a dangerous place for astronauts . ...