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Okay... it's not a precise answer, but here goes. I'll start by discussing my research into the Moon's solidification, since it's relevant, especially as the Moon took longer to solidify than the E...
Based on the current state of thinking, somewhere in the vicinity of a couple hundred kilometers. This particular formation theory (Zhang & Lin 2020) is a variant of an idea that's been kicked...
Just reduce the rate at which you lose entanglement (The paper, for anyone wanting to read it, is Humphreys et al. 2018.) The hey problem here isn't entangling particles, per se - the problem is ...
Sure. Not a whole lot, but you'll get a decent number. Beer et al. 2004 present a formula for calculating the mean time before a star passes within a distance $b_{\text{min}}$ of another star: $$...
I'm going to post this anyway, even though it overlaps with M.Winkens' answer, because a) I thought of it first (note comments on the question), and b) I think the other answer is missing a few poi...
According to this answer to a different question: On Earth, a large tree on average collects maybe 200 calories of energy in a day. (Thanks, Dan! This also gives the same answer, but could be...
It would be foggy. In fact, it would probably look somewhat like fog illuminated by a car's headlights. I assume the reason this isn't obvious is because you're thinking that this glowing air is ...
I agree largely with Matthew's answer; this is intended to put everything on a more quantitative footing. The answer to your question primarily depends on three things: the mass of molecules in th...
The simple answer is a no. We've gotten some pretty good constraints from the Planck satellite; their final results indicated a dark energy density of $\rho\approx6\times10^{-30}\text{ g cm}^{-3}$....
This wouldn't work. The big issue is that stars make up only a few percent of the Milky Way's total mass - estimates vary by a bit, but I've heard numbers in the 3-5% range. For instance, McMillan...
Safehold and Stargate both tried this. Neither worked out, but then, the point of both stories was people trying to overcome the "tech hurdle". In both instances, you have some sort of strict pros...
In addition to all the other answers, do also note that you don't need to necessarily obtain water, all you need is hydrogen and oxygen and you can create water. Hydrogen is the most common eleme...
As indicated in my comments, it's not at all clear what you're expecting to get out of this software. I highly doubt anything designed specifically for what you want to do exists. You're asking ab...
Unless trees don't exist, this is dodgy. Even in the actual Great Plains, there are trees, especially around bodies of water. (This includes streams and ponds; you don't need something like the Gre...
This answer is meant as a supplement to notovny's. I agree with their conclusions (the scenario is impossible because of the instability of this Lagrange point, and the fact that the Hill sphere is...
How would their flight change as they enter the central zero gravity axis area? Once they're accustomed to it, I expect they'd flap their wings less often, since they don't need the lift to st...
OK. So. Here's the assumptions I'm making with this answer: Humanity has figured out how to transfer their minds into robot minds These (base) robot bodies are on par with human bodies, in terms ...
It is precisely those diseases and bacteria that make the brain need to be visible and, potentially, accessible. The bacteria and diseases attack the brain from the outside in, and they leave disc...
they posses wings that stretch out over 1 mile Your species is extremely implausible. There are very few structures, period, that are this large; in fact, the only such structures I'm aware of...
Simulations of the dynamics of planets close to massive stars during a supernova (Veras et al. 2011) indicate that a planet in a reasonably tight orbit ($\sim2\text{ AU}$) around all but the lowest...
Rule Of Cool. Plus, only the rich aliens do this - your average everyday Joe Six-Pack alien can't afford the surgery. And it has to be done after the skull has grown to full adult size - or done mu...
The scenario you describe - accreting matter being expelled by radiation pressure - will occur if the object exceeds the Eddington luminosity, a limit derived from hydrostatic equilibrium based on ...
Humans would seem to be a strong argument at least for the plausibility. While typical western culture doesn't exactly fit the bill, there have been arguments that some human cultures qualify. The...
A simple answer is that the planet is on an orbit with a high inclination relative to our line of sight. The other planets in the system may appear, from our perspective, to be in line with us and ...
As it happens, I know of a predator combining vocal mimicry with other forms of mimicry. This is so horrendously effective that it can infiltrate the colonies of its victims and remain undetected w...
