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  2. PSR B1257+12 - Wikipedia

    en.wikipedia.org/wiki/PSR_B1257+12

    The pulsar is estimated to have a mass of 1.4 M ☉, which is typical for most neutron stars and pulsars. The radius is estimated to be around 10 kilometres or 6.2 miles (~1.5 × 10 −5 R ☉), also common for pulsars and neutron stars. The pulsar is extremely hot, with a surface temperature of up to around 28,856 K (28,583 °C; 51,481 °F).

  3. Plasma propulsion engine - Wikipedia

    en.wikipedia.org/wiki/Plasma_propulsion_engine

    The VASIMR thruster can be throttled for an impulse greater than 12000 s, and hall thrusters have attained ~2000 s. This is a significant improvement over the bipropellant fuels of conventional chemical rockets, which feature specific impulses ~450 s. [ 10 ]

  4. Toei 12-000 and 12-600 series - Wikipedia

    en.wikipedia.org/wiki/Toei_12-000_and_12-600_series

    Toei 12-000 series; Toei 12-600 series This page was last edited on 16 February 2023, at 13:54 (UTC). Text is available under the Creative Commons Attribution ...

  5. Pulsar - Wikipedia

    en.wikipedia.org/wiki/Pulsar

    X-ray pulsar-based navigation and timing (XNAV) or simply pulsar navigation is a navigation technique whereby the periodic X-ray signals emitted from pulsars are used to determine the location of a vehicle, such as a spacecraft in deep space. A vehicle using XNAV would compare received X-ray signals with a database of known pulsar frequencies ...

  6. Radioisotope thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Radioisotope...

    Diagram of an RTG used on the Cassini probe. A radioisotope thermoelectric generator (RTG, RITEG), sometimes referred to as a radioisotope power system (RPS), is a type of nuclear battery that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity by the Seebeck effect.

  7. 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.