# \#rockets

**URL:** https://scanalyst.fourmilab.ch/tag/rockets/1477.md

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## [Space, the Final Frontier](https://scanalyst.fourmilab.ch/t/space-the-final-frontier/6491)

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**Author:** [@Gavin](https://scanalyst.fourmilab.ch/u/Gavin)\
**Replies:** 3\
**Last updated:** [21 October 2026 17:12 UTC](https://scanalyst.fourmilab.ch/t/space-the-final-frontier/6491 "2026-10-21T17:12:14Z")

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Here’s an interesting link from Kevin Walmsley – a long-established China booster, just so you know. Interesting point is that satellites generate revenue, rocket launches not so much. Normal economics would suggest th…

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## [Why (Many) Rockets Have Fins](https://scanalyst.fourmilab.ch/t/why-many-rockets-have-fins/1744)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [25 July 2022 13:19 UTC](https://scanalyst.fourmilab.ch/t/why-many-rockets-have-fins/1744 "2022-07-25T13:19:26Z")

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It’s pretty easy to memorise “centre of mass ahead of centre of pressure”, but achieving it is more complicated, especially in liquid fuelled rockets whose propellant tanks drain during flight, shifting the…

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## [Rocket Mail](https://scanalyst.fourmilab.ch/t/rocket-mail/1075)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 0\
**Last updated:** [21 March 2022 15:41 UTC](https://scanalyst.fourmilab.ch/t/rocket-mail/1075 "2022-03-21T15:41:25Z")

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As is so often the case, the Kingdom of Tonga played a part in the development of this emerging technology. Here is more on rocket mail. In Robert Heinlein’s 1947 young adult novel Rocket Ship Galileo, th…