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Hey Bill Nye! How Did You Come Up With the Idea for the LightSail?

In today's edition of #TuesdaysWithBill, 8-year-old Shya asks Bill Nye about the LightSail satellite, a solar sailing spacecraft launched by the Planetary Society and currently "sailing" around us in space.

Shya: Hi Bill. My name is Shya. I am eight years old. My question is how did you come up with the idea for the LightSail.

Bill Nye: I love you. That’s a great question. So it wasn’t really my idea, Shya. People who lived before me, people who were astronomers and physicists discovered that light, even though it has no mass, has a tiny, tiny bit of momentum. Just while you’re sitting there in a room with the lights on and when you’re out in the sun, there’s just a tiny, tiny push on you because it’s pure energy. So when it strikes something it imparts some energy to it. It gives it a little push. People over just about a century ago realized if you had a spacecraft in space of low enough mass — it wouldn’t weigh very much on earth — and it was big enough it would get a push. And so my old professor, Carl Sagan, was a big advocate of this making a solar sail as it’s called to catch up with Comet Halley, which you may sometimes hear as called Halley’s Comet. And that mission got canceled. That spaceship got canceled for other NASA projects. But now at the planetary site, which he started, Carl Sagan started, with the head of the Jet Propulsion Lab Bruce Murray and Lou Friedman who was an engineer at Jet Propulsion Lab out in California. They worked on that comet Halley mission and they held it in their hearts. They wanted this thing to fly. And now I have become the CEO of the Planetary Society started by those three guys. And now 39 years after Carl Sagan presented this idea to the world, we are flying a much more modest, nevertheless when you look at it, it looks very much the same, LightSail spacecraft. It would have the capability — here’s our patch, our mission patch. It would have the capability to take you to the moon, to Mars, to asteroids at a very low cost, which is a big problem, you know, in anything is how much it costs. That is a great question Shya. I hope you follow the mission. We’re in space right now as I talk and in the next few weeks, after we spread out from other spacecraft, we will deploy our sails, extend our shiny sails and see if it works. By the way if the sails were black, the light would hit it and give it a push. But because they’re shiny the light hits it and bounces off and that’s mathematically exactly twice the push. So Shya, that’s math. And I want you to get good at it. Thanks for the question.


In today's edition of #TuesdaysWithBill, eight-year-old Shya asks Bill Nye about the LightSail satellite, a solar sailing spacecraft launched into space by the Planetary Society. Although he is most commonly linked to LightSail, Bill notes that it wasn't really his idea. In fact, this is an experiment over 35 years in the making, ever since it was first proposed by Bruce Murray and Lou Friedman of Jet Propulsion Laboratory in collaboration with Bill's astronomy professor, a guy you might have heard of named Carl Sagan.

Be sure to track LightSail's progress via the Planetary Society website. Have a question for Bill? Learn how you can submit to #TuesdaysWithBill here.

The “new normal” paradox: What COVID-19 has revealed about higher education

Higher education faces challenges that are unlike any other industry. What path will ASU, and universities like ASU, take in a post-COVID world?

Photo: Luis Robayo/AFP via Getty Images
Sponsored by Charles Koch Foundation
  • Everywhere you turn, the idea that coronavirus has brought on a "new normal" is present and true. But for higher education, COVID-19 exposes a long list of pernicious old problems more than it presents new problems.
  • It was widely known, yet ignored, that digital instruction must be embraced. When combined with traditional, in-person teaching, it can enhance student learning outcomes at scale.
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Creativity: The science behind the madness

Human brains evolved for creativity. We just have to learn how to access it.

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  • According to Eagleman, during evolution there was an increase in space between our brain's input and output that allows information more time to percolate. We also grew a larger prefrontal cortex which "allows us to simulate what ifs, to separate ourselves from our location in space and time and think about possibilities."
  • Scott Barry Kaufman details 3 brain networks involved in creative thinking, and Wendy Suzuki busts the famous left-brain, right-brain myth.

Dinosaur bone? Meteorite? These men's wedding bands are a real break from boredom.

Manly Bands wanted to improve on mens' wedding bands. Mission accomplished.

Sex & Relationships
  • Manly Bands was founded in 2016 to provide better options and customer service in men's wedding bands.
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  • The company donates a portion of profits to charity every month.
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What if Middle-earth was in Pakistan?

Iranian Tolkien scholar finds intriguing parallels between subcontinental geography and famous map of Middle-earth.

Image: Mohammad Reza Kamali, reproduced with kind permission
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  • J.R.R. Tolkien hinted that his stories are set in a really ancient version of Europe.
  • But a fantasy realm can be inspired by a variety of places; and perhaps so is Tolkien's world.
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How #Unity2020 plans to end the two-party system, bring back Andrew Yang

The proposal calls for the American public to draft two candidates to lead the executive branch: one from the center-left, the other from the center-right.

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Politics & Current Affairs
  • The #Unity2020 plan was recently outlined by Bret Weinstein, a former biology professor, on the Joe Rogan Experience.
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