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By Bill Nye | Published: March 17, 2010 – 8:42 am

This week, I’m in Philadelphia for the U.S. National Science Teachers Convention. O, it’s a wild old party. There will be dinosaurs, rocks, and rockets; balloons, halogens, snakes, planets, and plutoids. I’ll be speaking on Thursday. This year, as Vice President of the Planetary Society, I’ll be describing and celebrating our Lightsail® solar sail project. The humble little Planetary Society (50,000 members in 130 countries around the world) is launching our very own spacecraft that will be pushed through space by nothing but sunlight. It’s a consequence of relativity. Photons, even though they have no mass, have momentum. It’s been measured, but never put to use increasing the orbital energy of a human-built spacecraft. This will be the future of space propulsion for certain flights and missions. If you’re in Philadelphia, I hope to see you at 2:00 (14:00) at the Convention Center!

LightSail Earth

5 Responses to “”

  1. Wow! That’s amazing! I wish I could be there. Is your talk going to be posted online somewhere or recorded? If so, will you please post where we can go to read/see/listen to it?

    Thank you!

  2. Dan says:

    I totally would have been there had I known! Please ask Gizmodo for large sums of money and contribute to their site weekly.

  3. Officer Owen Sprague says:


  4. Technology growing up day by day I wish this “Solar sail” will help humanity. I just say GOOD LUCK

  5. Daniel says:

    Philadelphia is such a wonderful place. I love it!

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