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  2. Multi-mission radioisotope thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Multi-Mission_Radioisotope...

    Diagram of a MMRTG. The multi-mission radioisotope thermoelectric generator (MMRTG) is a type of radioisotope thermoelectric generator (RTG) developed for NASA space missions [1] such as the Mars Science Laboratory (MSL), under the jurisdiction of the United States Department of Energy's Office of Space and Defense Power Systems within the Office of Nuclear Energy.

  3. File:Solar system delta v map.svg - Wikipedia

    en.wikipedia.org/wiki/File:Solar_system_delta_v...

    Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

  4. Simple Model of the Atmospheric Radiative Transfer of Sunshine

    en.wikipedia.org/wiki/Simple_Model_of_the...

    The first versions of SMARTS were developed by Dr. Gueymard while he was at the Florida Solar Energy Center. [2] [3] [4] The model employed a structure similar to the earlier SPCTRAL2 model, still offered by the National Renewable Energy Laboratory (), but with finer spectral resolution, as well as updated extraterrestrial spectrum and transmittance functions.

  5. Solar electric propulsion - Wikipedia

    en.wikipedia.org/wiki/Solar_electric_propulsion

    An example of work on this type of technology is Advanced Electric Propulsion System. [5] The NASA Solar Technology Application Readiness (NSTAR) ion engine has been used with photovoltaic solar panels, which was tested on the Deep Space 1 mission along with Solar Concentrator Arrays (Launched in 1998 as part of the New Millennium Program). [6] [7]

  6. Mars Radiation Environment Experiment - Wikipedia

    en.wikipedia.org/wiki/Mars_Radiation_Environment...

    The diagram above indicates that a main radiation exposure is about 20 mrad/d resulting in annual dose of about 73 mGy/a. However occasional solar proton events (SPEs) produce a hundred and more times higher doses (see the diagram above). SPEs, which were observed by MARIE, were not observed by sensors near Earth confirming that SPEs are ...

  7. Solar panels on spacecraft - Wikipedia

    en.wikipedia.org/wiki/Solar_panels_on_spacecraft

    The Juno mission, launched in 2011, is the first mission to Jupiter (arrived at Jupiter on July 4, 2016) to use solar panels instead of the traditional RTGs that are used by previous outer Solar System missions, making it the furthest spacecraft to use solar panels to date. [17] [18] It has 50 square metres (540 sq ft) of panels. [19] [20]

  8. NASA Solar Technology Application Readiness - Wikipedia

    en.wikipedia.org/wiki/NASA_Solar_Technology...

    The feed system development was a collaborative effort between JPL and Moog Inc. [1] The ions are accelerated through two fine grids with roughly a 1300 V difference between them for 2.3 kW operation, [4] [5] with a thrust of 20-92 mN, a specific impulse of 19000-30500 N·s/kg (1950-3100 s) and a total impulse capability of 2.65 x10 6 Ns on DS1 ...

  9. Reuven Ramaty High Energy Solar Spectroscopic Imager

    en.wikipedia.org/wiki/Reuven_Ramaty_High_Energy...

    Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI, originally High Energy Solar Spectroscopic Imager or HESSI or Explorer 81) was a NASA solar flare observatory. It was the sixth mission in the Small Explorer program (SMEX), selected in October 1997 [ 1 ] [ 7 ] and launched on 5 February 2002, at 20:58:12 UTC .

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