Optimized Trajectories to the Nearest Stars Using Lightweight High-velocity Photon Sails

  title={Optimized Trajectories to the Nearest Stars Using Lightweight High-velocity Photon Sails},
  author={Ren{\'e} Heller and Michael Hippke and Pierre Kervella},
  journal={The Astronomical Journal},
New means of interstellar travel are now being considered by various research teams, assuming lightweight spaceships to be accelerated via either laser or solar radiation to a significant fraction of the speed of light (c). We recently showed that gravitational assists can be combined with the stellar photon pressure to decelerate an incoming lightsail from Earth and fling it around a star or bring it to rest. Here, we demonstrate that photogravitational assists are more effective when the star… 
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Galactic traversability: a new concept for extragalactic SETI
  • B. Lacki
  • Physics
    International Journal of Astrobiology
  • 2021
Interstellar travel in the Milky Way is commonly thought to be a long and dangerous enterprise, but are all galaxies so hazardous? I introduce the concept of galactic traversability to address this
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S1473550421000252jra 359..376
Interstellar travel in the Milky Way is commonly thought to be a long and dangerous enterprise, but are all galaxies so hazardous? I introduce the concept of galactic traversability to address this


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Sirius, the seventh-nearest stellar system, is a visual binary containing the metallic-line A1 V star Sirius A, the brightest star in the sky, orbited in a 50.13 year period by Sirius B, the