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Articles tagged: Indicators

  • Asteroid impact, Debbie Lewis, Near Earth Objects October 2015 From NEOs to real action: testing asteroid impact scenarios

    ...enhanced to ensure that either they are able to withstand the impact effects Although the tracking observations indicated that the fictitious asteroid posed a serious risk of impacting Earth on 3 September 2022, with an estimated likelihood of impact...

    • Asteroid impact
    • Debbie Lewis
    • Near Earth Objects
    Authors: Debbie Lewis    
  • astronomy, astrophysics, gravity, LIGO, waves March 2016 Gravitational waves provide new window on the universe

    ... the locations and orientations of the two LIGO observatories, and indicates the light travel time between them. Inset (b) shows how ... mass of the final black hole during the ringdown indicates that the coalescence converted about three times the mass...

    • astronomy
    • astrophysics
    • gravity
    • LIGO
    • waves
    Authors: Karelle Siellez    
  • Article, Earth, magneticpoles, solarstorm July 2016 Our changing world and the mounting risk of a calamitous solar storm

    ... require the development power sources that could be easily generated by solar arrays. The accompanying chart (below) indicates the magnetic field levels of various applications. Such a magnetic solar shield structure could provide protection against...

    • Article
    • Earth
    • magneticpoles
    • solarstorm
    Authors: Joseph N. Pelton    
  • Article, commerce, launchers, technological innovation, Xtenti September 2016 Small launcher market survey

    ... small launchers in that band. These trends seem to indicate that interest is for dedicated launch for the direct injection...kilogram. Interviews with key players in the industry seemed to indicate a wariness in the reality of the small launch market....

    • Article
    • commerce
    • launchers
    • technological innovation
    • Xtenti
    Authors: Daniel Lim    
  • annular ion engine, electric propulsion, evolutionary xenon thruster, innovation, NASA October 2016 Unlocking the potential of annular ion engines

    ...electrical efficiencies as compared to the NEXT thruster. As indicated, the near-term curve drives down the Isp cross...), as well as SOA ION. Curve fits of data for both technologies indicate a cross-over in F/P at about 2600 seconds. Also plotted are ...

    • annular ion engine
    • electric propulsion
    • evolutionary xenon thruster
    • innovation
    • NASA
    Authors: Michael J. Patterson    
  • Churyumov-Gerasimenko, Comet 67P, Philae, Rosetta, Rosetta Mission March 2017 Rosetta – outstanding climax to pioneering mission

    ... we receive the long-awaited signal from the spacecraft, indicating that it was still there, healthy and ready to perform...to its normal flight mode and looked at the few telemetry indications we had from the long hibernation period. It turned out that...

    • Churyumov-Gerasimenko
    • Comet 67P
    • Philae
    • Rosetta
    • Rosetta Mission
    Authors: Paolo Ferri    
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