When I plug those numbers into https://www.aerovia.org/tools/rocket-equation I get Delta-Vs in the 28k km/hr range right where I'd expect for orbit.
You got a different rocket equation?
3,061 karma · joined November 26, 2014
When I plug those numbers into https://www.aerovia.org/tools/rocket-equation I get Delta-Vs in the 28k km/hr range right where I'd expect for orbit.
You got a different rocket equation?
If they do manage to reuse the upper stage, then they should have no problem exceeding falcon launch cadence. Starship is much easier to build than Falcon. Welding is simpler and less expensive than the carbon composites used on Falcon upper stages.
10x that seems aspirational, but not comically so. Folks hate Musk, but that seems to cause them to not see the engineering going on in front of them.
1: https://officechai.com/stories/spacex-launched-85-of-all-glo... 2: https://www.nextbigfuture.com/2024/05/spacex-launching-87-90...
More:
https://www.pnas.org/doi/10.1073/pnas.1411762111
https://www.nature.com/articles/s41586-025-08769-7
https://www.academia.edu/9737879/Land_Beneath_the_Waves_Subm...
https://pure.york.ac.uk/portal/en/publications/under-the-sea...
Here's a citation demonstrating that over the last 95 million years if you need one: https://www.pnas.org/doi/10.1073/pnas.2111332119
One more just for fun: https://journals.ametsoc.org/view/journals/clim/12/4/1520-04...
Earth would have to experience > +35 to +50C for the poles to be uninhabitable due to heat.
That's a problem at the Equator, but not at the higher latitudes.
The mad rush to get there would likely extract a heavy toll.
It's possible the sea level rise could have initiated the cooling. But there is much disagreement as to what exactly initiated the de-glaciation which caused the sealevel rise.
1: https://en.wikipedia.org/wiki/Geologic_temperature_record#/m...
That's happened rather more times in Earth's history than most folks are comfortable admitting. Tunguska would have leveled any major metropolitan city on the planet. I still think an impact is one of the more likely initiators of the Younger Dryas abrupt cooling and worldwide ~100M sealevel rise ~12,000 years ago. Conspicuously aligned with the oldest surviving traces of city living, agriculture, etc. It's increasingly accepted that a large portion of human history is 100M underwater on the continental shelves, estuaries, and other coastal areas where humans would have liked to live.
Given time, humans and other animals will move toward the poles or toward the equator to find habitable zones. Put that on a rush schedule and everyone suffers.
Kennedy wanted to "break the CIA into a thousand pieces"[1] and had a trusted brother as Attorney General to help with the task. And we learn 70 years later that Oswald was a CIA asset[2]. It's enough for even a President to sit up and take notice.
1: https://nsarchive.gwu.edu/sites/default/files/2025-03/2025-0...
2: https://www.newsweek.com/new-documents-shed-light-cias-conne...