Will any human-created object reach 1% of light speed before 2033?
Will any human-created object reach 1% of light speed before 2033?
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The object in question must have meaningful complexity, it can't be a few atoms bonded together by a human and stuck in a particle accelerator. Speed calculated relative to Earth, and must be maintained for at least 5 seconds.
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Fastest so far is the Parker Solar Probe at 0.064% of light speed. (That's relative to the Sun, not the Earth, but the Earth's orbital speed is only about 0.01% of light speed, so adding it on doesn't help much.)
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What is this?
What is Manifold?
Manifold is the world's largest social prediction market.
Get accurate real-time odds on politics, tech, sports, and more.
Win cash prizes for your predictions on our sweepstakes markets! Always free to play. No purchase necessary.
Are our predictions accurate?
Yes! Manifold is very well calibrated, with forecasts on average within 4 percentage points of the true probability. Our probabilities are created by users buying and selling shares of a market.
In the 2022 US midterm elections, we outperformed all other prediction market platforms and were in line with FiveThirtyEight’s performance. Many people who don't like trading still use Manifold to get reliable news.
How do I win cash prizes?
Manifold offers two market types: play money and sweepstakes.
All questions include a play money market which uses mana
and can't be cashed out.
Selected markets will have a sweepstakes toggle. These require sweepcash
to participate and winners can withdraw sweepcash as a cash prize. You can filter for sweepstakes markets on the browse page.
Redeem your sweepcash won from markets at
1.00 → $1.00, minus a 5% fee.
Learn more.Related questions
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