quote · Legacy record
The fastest that human spacecraft are likely to achieve in the twenty-first century, I think, is 300 kilometres per second.
The fastest that human spacecraft are likely to achieve in the twenty-first century, I think, is 300 kilometres per second.
Historical period not yet established
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An individual explanation has not yet been added. We do not substitute a generic description for an interpretation of these particular words.
Begin with source-checked readings and explanations ↗Attribution & collection notes
- Author or tradition
- Kip S. Thorne
Attribution: attributed - Country attributed
- Not established
A country attribution does not establish the earliest origin. - Historical period
- Historical period not yet established
No sufficiently supported historical placement has been established. Import and download dates are not treated as composition dates. - Recorded source
- Contributor-provided quotation collection
Supplied reference C; CSV row 248252; supplied attribution, independently unverified
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