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Bruce Damer's talk on Asteroids and Comets: Mitigating Impact Risks & Stepping Stones to a Sustainable Space Program (IEET workshop, 2008)
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Bruce Damer's talk on Asteroids and Comets: Mitigating Impact Risks & Stepping Stones to a Sustainable Space Program (IEET workshop, 2008)

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Bruce Damer's talk on Asteroids and Comets: Mitigating Impact Risks & Stepping Stones to a Sustainable Space Program (IEET workshop, 2008)

Bruce Damer's talk on Asteroids and Comets: Mitigating Impact Risks & Stepping Stones to a Sustainable Space Program (IEET workshop, 2008)

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    Bruce Damer's talk on Asteroids and Comets: Mitigating Impact Risks & Stepping Stones to a Sustainable Space Program (IEET workshop, 2008) Bruce Damer's talk on Asteroids and Comets: Mitigating Impact Risks & Stepping Stones to a Sustainable Space Program (IEET workshop, 2008) Presentation Transcript

    • Asteroids and Comets: (Near Earth Objects, or NEOs) Mitigating Impact Risks & Stepping Stones to a Sustainable Space Program Bruce Damer, DigitalSpace IEET Seminar, 14 Nov, 2008
    • Q: Where did NEOs come from? A: The very birth of our Solar System!
    •  
    • Q: Where are NEOs today? A: Everywhere!
    • > 1,000,000 Total by ~2020 > 300,000 Tunguska or larger
    •  
    • Q: Have NEOs shaped life on Earth? A: Yes! The evolution of our biota was uniquely impacted by NEOs.
    •  
    • Q: Could this happen again? A: Yes! Take a look… (thank you Carter Emmart, Hayden Planetarium)
    •  
    • Now that’s something to think about!
    • Risk Corridor for Apophis Case study: Apophis, 2029-2036
    • 2020 - Risk Corridors Other NEOs of Concern
    • Q: Have we visited NEOs? A: Yes! With robotics…
    • NEAR-Shoemaker (Eros)
    • Hayabusa (Itokawa)
    • Deep Impact (Tempel 1 Comet)
    • Q: Could humans visit NEOs? A: Yes! Here is a way it could work…
    • Design for a human mission to a NEO
    • Popular Science, November 2007 … which was picked up by the popular media…
    • … and somewhat creatively misinterpreted!
    • Q: Can we Mitigate the threat posed by NEOs? A: Yes! Here is a way it could work…
    • Hollywood: Not how it would work
    • Kinetic Impact Pushes the asteroid via direct impact Orbit Determination Determining which NEOs are threatening Gravity Tractor Pulls the asteroid using mutual gravity as a tow-rope B612 Foundation 2008 Research Project
    • Kinetic Impactor: Assisting Gravity Tractoring
    • DigitalSpace/B612 Visualization of GT/Kinetic Impactor
      • Who will issue warnings to evacuate a predicted impact point?
      • Based on what information?
      • How will the public react if there are conflicting predictions?
      • What deflection technologies exist and who approves their use?
      • Who accepts liability if an asteroid deflection doesn’t work?
      • Who decides that it’s acceptable to temporarily increase the risk to some people in order to eliminate it for everyone?
      • What is the biggest asteroid we can safely decide to ignore?
      • Who pays to deflect an asteroid?
      • What does such a mission cost?
      • Who should deflect an incoming asteroid?
      • Will two space agencies decide to take conflicting actions?
      Critical Questions
    • Q: Could we use resources on NEOs to support exploration and settlement of the solar system? A: Perhaps!
    • From the fanciful
    • Vehicle on virtual lunar terrain, excavating volume To the seriously studied
    • To the imagined
      • #1 “Refueling Stations” for propulsion & human consumables
      • Lowers launch mass of vehicles
      • Increases safety, sustainability
      • NEOs as viable biospheres?
      • We are all made of NEO-stuff! (apologies to C. Sagan!)
      • Who can stake a claim?
      • If NEOs are brought into Low Earth Orbit, who is threatened, who benefits?
      Benefits from Capturing & Mining NEOs
    • Thank you NASA and B612 Foundation for funding this work. DigitalSpace’s NEO Mission Simulations: http://www.digitalspace.com NASA Near Earth Object Program: http://neo.jpl.nasa.gov B612 Foundation: http://www.b612foundation.org
    • Thank you for your attention! Contact: [email_address] Source: www.grinningplanet.com