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Articles tagged: Sun

  • Gaia, Gaia second data release, Sagittarius dwarf galaxy 25 May 2020 Clashing galaxies may have triggered Solar System formation says new study

    ... thought. After analysing the ages of tens of millions of stars in a 6,500 light-year radius bubble around the Sun in order to understand star-forming events, researchers uncovered a striking coincidence; each time Sagittarius got uncomfortable close...

    • Gaia
    • Gaia second data release
    • Sagittarius dwarf galaxy
  • ESOC, NASA, Rosetta March 2016 Rosetta – Starting from Scratch

    ...environment for months or years while it travels around the Sun. The initial idea was even more ambitious - to land...: flying a solar-powered spacecraft at 800 million km from the Sun, hibernating a spacecraft for 2.5 years, navigating around a small, ...

    • ESOC
    • NASA
    • Rosetta
    Authors: Paolo Ferri    
  • cruise phase, mars, Paolo Ferri, Rosetta November 2016 Rosetta - an eventful cruise phase

    ...of the spacecraft.. One month later, in early September, the Sun decided to frighten us, blinding the Rosetta Star Trackers by flooding...the spacecraft would not react to the loss of Sun presence by triggering survival modes. Rosetta flight control ...

    • cruise phase
    • mars
    • Paolo Ferri
    • Rosetta
    Authors: Paolo Ferri    
  • GEO, satellites, Solar Dynamics, space debris, Syncom 3 October 2017 Saving geostationary orbit

    ... warning of extreme space weather events generated by the Sun. Debris problem Fifty years of GEO operations has resulted...addition, the Yarkovsky effect – where energy absorbed from the Sun is eventually re-radiated away as heat, creating a tiny ...

    • GEO
    • satellites
    • Solar Dynamics
    • space debris
    • Syncom 3
    Authors: Stuart Eves    
  • coronagraph, exoplanet, microlensing, starshade, WFIRST August 2018 Exoplanet census promises radical discoveries

    ...exoplanets), which are planets that orbit stars other than the Sun. From the first exoplanet discovery (by Swiss astronomers, Michel...to search for and characterise Earth-like planets around Sun-like stars. A starshade and telescope flying in formation...

    • coronagraph
    • exoplanet
    • microlensing
    • starshade
    • WFIRST
    Authors: David Bennett     Jeremy Kasdin    
  • colonise, exoplanet, social engineering, world ship November 2018 How many people does it take to colonise an exoplanet?

    ...gives some cause for optimism. Orbiting the nearest star to the Sun, this is the closest exoplanet we can find. It is likely...km/s by taking advantage of the enormous gravitational pull of the Sun. But even this translates to a travel time to Proxima ...

    • colonise
    • exoplanet
    • social engineering
    • world ship
    Authors: Camille Beluffi     Frédéric Marin     Rhys Taylor    
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