One question

You have the chance to meet in person Galileo Galilei, Isaac Newton, Albert Einstein, Carl Sagan and you can ask each of them one question. What question would it be?

Andrew Rader (SpaceX engineer, MIT PhD, author)

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Galileo Galilei – What do you think about humans visiting the Moon? Isaac Newton – What do you consider your greatest achievement? Albert Einstein – What inspired you to start thinking about the great problems of physics? Carl Sagan – If you could ask Galileo one question, what would it be? (I think he’d have a better answer than I did)


Fraser Cain (publisher at Universetoday.com, co-host of Astronomy Cast)

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I really wish I could go back in time and talk to these scientists, especially Galileo. I’m not sure I’d have a lot of questions for them, but I’d love to be able to give them an update on the science they figured out. I could tell Galileo about the moons of Jupiter, and the amazing features we’ve found on them. I could let Newton know about all the discoveries we’ve made about gravity, and how his calculations still form the basis of so much of our science and mathematics. I’d love to let Einstein know that Relativity is still holding strong 100 years after he first described it, including the recent direct detection of gravitational waves. I’m sure Sagan would love an update on the state of Solar System exploration and to learn about what we saw with a flyby of Pluto, or the rovers on Mars.


Nicole Guggliucci (“Noisy astronomer”, blogger, educator, post-doc)

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Can I trade in my answers with the others and just talk with Carl Sagan? I think I’d ask him a BUNCH about methods of science communication, searching for extraterrestrials, and how to bring us away from the brink of ecological disaster. Maybe that’s cheating, but I’d get a lot more out of a conversation with him than the others!


Antonio Paris (Astronaut Candidate, Astronomy Professor, Planetary Scientist, Space Science Author)

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If I could travel back in time, to where the father’s of modern astronomers lived, I would ask them a variety of questions. Each of these questions, however, would be shaped to fit the era. For Galileo, I would ask him how did you react when you first observed the moon’s of Jupiter? What was your initial reaction? For Newton, I would ask him did an apple actually fall toward your feet, which shaped your curiosity to tackled gravity. For Albert Einstein, I would ask him he he could stop the building of atomic weapons during WWII, would he do it. And, finally, I would ask Carl Sagan … do you believe in God, seriously.

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