spaceflight, to solar
@spaceflight@spacey.space avatar

📆 2023 This study by for proposes a 29,339 m2 ☀️ collector at the point, from 🌙 materials, transported by a 🚠 from the https://nebula.esa.int/sites/default/files/neb_study/2753/C4000136309ESR.pdf

sfwrtr, to 13thFloor
@sfwrtr@eldritch.cafe avatar

Space elevators seem like a great idea, once again..Yay! See the linked article.

https://phys.org/news/2024-02-space-elevators-physicist-humanity-spacefaring.html

Yes, but...

"Geostationary orbit is roughly 22,236 miles above the Earth's surface. ... Effectively, a cable would descend from a satellite structure anchored in geostationary orbit that would act as a "counterweight" down to Earth."

If one were to fail—as do all human-made structures—it would wrap itself around the circumference of the Earth at the equator. That's 24,902 miles. The orbital momentum of the fall would throw debris considerably further. Don't expect one soon, if ever. (This would make a great story prompt, though. I once wrote a short story about one.)

and


itnewsbot, to space
@itnewsbot@schleuss.online avatar
BenjaminHCCarr, to space
@BenjaminHCCarr@hachyderm.io avatar

An illustrated tour of the skies in an
A long scroll through the skies gives you a sense of elevation up until you leave . See how high birds fly, where the wild yak resides, and who was the first person to break the sound barrier in a free fall.
https://neal.fun/space-elevator/

eldritch48, to random

Can’t decide how I feel about the Space X launch. I want stuff like that to work, but I also love watching anything Musk related crash and burn.

jfml,

@eldritch48 Ever since I learned about the concept of rockets seem like such a silly (and environmentally bad) thing to do.

We just need to research a material (or rather research into making nano tubes longer) and the possibilities are endless, solar power from space, space-lift to moon and Mars, huuuuuuge space telescopes and space stations, asteroid mining, it would literally be the next step for humanity. It would be so cool!

But yeah, big rocket gone boom, huh ...

spaceflight, (edited ) to random
@spaceflight@techhub.social avatar

: "I'm highly confident it would be less than $10 million 💰 all in, fast forward two or three years from now," said about flight during the presentation * https://www.businessinsider.com/elon-musk-spacex-starship-rocket-update-flight-cost-million-2022-2

Visualized : 10 million $ / 100k kg = 100 $ 💵 per kg

🇪🇺 doesn't look good

isecdotorg,

@spaceflight $100/kg might be a target cost, but would it be the selling price to customers ?? There'd probably be a large mark-up for many years to cover engineering & other development costs, and perhaps some future 'carbon tax' on the fuel ... and there'd still be a capacity limit.
BTW, $100/kg happens to be the projected cargo cost for a launch ... with fewer capacity limitations and zero emissions (once assembled, perhaps by a few Starship launches !)

spaceflight, to Engineering
@spaceflight@techhub.social avatar

Since the 's 🌙 surface is much than the 's, the requirements for constructing a 🚠 system can be met using and 🔧 already available https://en.wikipedia.org/wiki/Lunar_space_elevator

Pictures (combined) :
https://commons.wikimedia.org/wiki/File:Earth_Rise_as_Seen_From_Lunar_Surface_(5052124921).jpg
https://commons.wikimedia.org/wiki/File:Portland_Aerial_Tram_-_Portland,_Oregon_(14636684883).jpg

spaceflight,
@spaceflight@techhub.social avatar

📆 November 25, 2022 Stephen Cohen has been working on 🚠 for almost 20 years. He believes they will exist soon— in two or three decades. To build it, we need a whose specific strength 💪 is about 50 times higher than https://www.scientificamerican.com/article/space-elevators-are-less-sci-fi-than-you-think

spaceflight,
@spaceflight@techhub.social avatar

Promising material for a 🚠 : in the form of a nearly transparent (to visible light) one ⚛️ thick sheet. It is hundreds of times stronger 💪 than most by weight https://en.wikipedia.org/wiki/Single-layer_materials#C:_graphene_and_graphyne

The invisibility 🔬 of the two-dimensional material structure was a problem for assurance, now tackled by the of , and the National Research Council () 📆 18 March 2023 https://www.nature.com/articles/s41467-023-37222-4

Also see the @isecdotorg International Consortium FAQ https://www.isec.org/faq

Picture : :ccby: :cc_sa: Graphene structure https://commons.wikimedia.org/wiki/File:Graphen.jpg

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