| There's no stopping it (9,6) |
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| Once on the move, it never stops (9,6) |
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| US criminal and others embracing universal proposal is an impossibility? |
The Times Cryptic |
05 Mar 2024 |
| Counsel's incessant proposal? |
Wall Street Journal |
17 Dec 2022 |
| Physicist's ''everlasting'' quest |
Newsday |
20 May 2020 |
| Nonstop action? |
Wall Street Journal |
06 Apr 2020 |
| Longstanding physicists' fascination |
Newsday |
23 Jun 2019 |
| It's still on the conference agenda? That's a physical impossibility |
The Times Cryptic |
23 Aug 2016 |
| Inventor's impossible goal |
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| Inventor's impossible goal |
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| Violation of the first and second laws of thermodynamics |
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| Scientific impossibility? |
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| Object of many a hopeful machine inventor's search |
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| Inventor's impossible goal |
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| Mechanical impossibility |
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| Theoretical unending phenomenon |
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| Mad scientist's dream |
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| Theoretical unending phenomenon |
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| Physics impossibility |
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| Nonstop action |
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| Physicist's fanciful quest |
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| Mechanical impossibility |
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| Scientific impossibility |
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| Physics impossibility |
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| Mechanical impossibility |
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| Frictionless-environment concept |
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| Impossible achievement |
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| Theoretical physical concept |
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| Inventor's impossible goal |
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| "Impossible" achievement |
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| Noted Paganini composition |
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| Inventor's "impossible dream" |
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| Ancient scientific quest |
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| An impossible dream |
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| Inventor's dream |
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| Asset of an ideal machine |
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| Inventor's dream. |
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| Physicist's fascination. |
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| One of the "impossibles." |
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| Mechanical impossibility. |
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| Mechanical mirage. |
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