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  2. Extravehicular activity - Wikipedia

    en.wikipedia.org/wiki/Extravehicular_activity

    For EVAs from the International Space Station, NASA employed a camp-out procedure to reduce the risk of decompression sickness. [34] This was first tested by the Expedition 12 crew. During a camp-out, astronauts sleep overnight in the airlock prior to an EVA, lowering the air pressure to 10.2 psi (70 kPa), compared to the normal station ...

  3. Apollo Lunar Module - Wikipedia

    en.wikipedia.org/wiki/Apollo_Lunar_Module

    The Lunar Module (originally designated the Lunar Excursion Module, known by the acronym LEM) was designed after NASA chose to reach the Moon via Lunar Orbit Rendezvous (LOR) instead of the direct ascent or Earth Orbit Rendezvous (EOR) methods. Both direct ascent and EOR would have involved landing a much heavier, complete Apollo spacecraft on ...

  4. Excursion (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Excursion_(disambiguation)

    Brownian excursion, a concept in the theory of stochastic processes; Critical excursion, or criticality accident, a topic in nuclear physics; Diaphragmatic excursion, the movement of the thoracic diaphragm during breathing; Geomagnetic excursion, a change in the Earth's magnetic field; Excursion (audio), the linear movement range of a speaker

  5. NASA - Wikipedia

    en.wikipedia.org/wiki/NASA

    The NASA X-57 Maxwell is an experimental aircraft being developed by NASA to demonstrate the technologies required to deliver a highly efficient all-electric aircraft. [142] The primary goal of the program is to develop and deliver all-electric technology solutions that can also achieve airworthiness certification with regulators.

  6. Thomas J. Kelly (aerospace engineer) - Wikipedia

    en.wikipedia.org/wiki/Thomas_J._Kelly_(aerospace...

    Kelly was promoted to lead the design team for the Lunar Excursion Module (LEM). He was in charge of more than 7,000 employees in design and building the Lunar Module. Kelly's group came up with the idea of a two-stage spacecraft (ascent & descent stage), that would take two astronauts to the Moon's surface while a third astronaut would stay in ...

  7. Launch status check - Wikipedia

    en.wikipedia.org/wiki/Launch_status_check

    For Space Shuttle missions, in the firing room at the Launch Control Center, the NASA Test Director (NTD) performed this check via a voice communications link with other NASA personnel. The NTD was the leader of the shuttle test team responsible for directing and integrating all flight crew, orbiter, external tank/solid rocket booster and ...

  8. List of spacecraft prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_spacecraft_prefixes

    A spacecraft prefix is a combination of letters, usually abbreviations, used in front of the name of a spacecraft, and its purpose is often analogous to more conventional ship prefixes.

  9. Apollo command and service module - Wikipedia

    en.wikipedia.org/wiki/Apollo_command_and_service...

    When NASA awarded the initial Apollo contract to North American Aviation on November 28, 1961, it was still assumed the lunar landing would be achieved by direct ascent rather than by lunar orbit rendezvous. [4] Therefore, design proceeded without a means of docking the command module to a lunar excursion module (LEM). But the change to lunar ...