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Frame Challenge One of the criteria you gave is: The sections are under the standard 0.992 gee acceleration. This is thrust induced, necessary to hold them in an orbit closer to their primary ...
I'm going to take a bit different approach to this based on the revisions... unfortunately I don't have math to back this up, but it should at least get you started thinking in a useful direction. ...
Cigarette butts are composed of tobacco (which is usually highly treated and contains toxic additives), wrapping paper, and cellulose-acetate filters. The amount of each will vary depending on bra...
The obvious retro answer would be to use carbide lamps which work by dripping water onto a chamber of calcium carbide producing acetylene as was used on the original versions of the Model T Ford: ...
This universe is fundamentally impossible, since some electrons have their worldlines terminated in a black hole. Without a full working model of quantum gravity, we can't make any firm predictions...
The earliest Metazoa originate between 800mya and 750mya, so anywhere from 80my to 30my prior to the beginning of the Cryogenian. The occurrence of snowball periods is likely not a factor in their...
A star's life ends when it can no longer undergo fusion at its core. For massive stars, this often happens when the core is made largely of iron, which can be fused (and is) in small amounts, but o...
7110 Earth masses and a surface temperature of 1700 K aren't unreasonable for a brown dwarf. The lower mass limit is thought to be around 13 Jupiter masses (or 4100 Earth masses) (see e.g. Spiegel ...
Use a Quasi-star. The solution I think will finally work is to use a quasi-star, a theoretical object from the early universe consisting of a black hole of perhaps $10M_{\odot}\text{-}100M_{\odot}...
Straying slightly from currently available technologies to those that are possible, but not yet achieved... The Lunar surface is rich in Helium-3, so if Helium-3 fusion propulsion is developed, th...
Black body radiation The Sun is, approximately, a black body. That means that the light it emits follows a particular spectrum according to Planck's law, with the shape of the spectrum determined ...
The mass of a star is directly related to how hot its surface is, which in turn, is responsible for the wavelengths of light it emits (This is called Black-Body Radiation). As a main sequence G2V ...
It depends on the size of the asteroid. For something the size of the Earth or moon, where gravity is generated, a molten mass will differentiate with heavier metals descending to the center and li...
The thing about planetary systems - and many $N$-body systems in general - is that they are fundamentally chaotic. That is, small changes grow over time, eventually creating wildly divergent result...
Lets try a quick back of the envelope calculation. A human lung is about 75 square meter,but water contains a lot less oxygen than air (~1/20th) so that's about 1500 sq meters you need to get the ...
TMM;DR (Too Much Math, Didn't Read): For anyone who doesn't want to go through the derivations and calculations below, here are the important points from my answer: We're not working with the sa...
The setup and the equation Let's look at the geometry involved here. I created two diagrams: On the left, we have the star of radius $R$. On the right, we have a cross-section of the ring. The ...
It only takes a generation or two to build an internet from scratch Think about it: One of the key predecessors of the Internet, ARPANET started in 1969. Look where we are today - or even 20 years...
The two existing answers address difficulties in converting the energy imparted to the satellite by the trebuchet into an orbit. You have limited resources, but don't clarify what resource are av...
Using thermal energy for power generation is a thing, but you need a temperature difference to make it work. You implanted device is likely to be essentially uniform in temperature meaning that it ...
This is a kind of alternative to KareemElashmawy's answer. As they point out, the best you can do with a single station is to put it in one of the Lagrange points, but these have problems. The Ear...
I went about this a bit differently than kingledion, and got a different answer (off by $\sim6$ orders of magnitude!). The difference is that I assumed that there would be accretion no matter what ...
Given that they're 2.2 kilometers underground, it looks like they can take advantage of the water table, the place where rocks are saturated with stored groundwater. The water table often holds aqu...
I decided to try to extrapolate from some known data. I used various sources to find that: The Harpy Eagle at 6 to 9 kg can lift a Three-Toed Sloth of 3.5 to 4.5 kg A Peregrine Falcon of 0.3 to ...
Yes they do! We are really close to having this using femtosecond lasers. One cool thing about these projections is that you can actually feel them. Who knows, in a century it could turn into so...
