Activity for Future Historian‭

Type	On...	Excerpt	Status	Date
Question	—	Would the following hypothetical planets in the 61 Cygni binary star system have stable orbits? To clarify, I realised that I kind of ran into a problem trying to check the orbital stability of two fictional planets in orbit around the real life 61 Cygni binary star star system. To explain: 61 Cygni A and B are a pair of K-class stars located at a distance of 11.41 light years from Earth, in... (more)	—	over 6 years ago
Question	—	How realistic/unrealistic is the trope of "The Earth that Was"? The idea of the trope is that at some point, Earth is doomed, humans flee into the stars, knowledge of Earth is lost in the process, eventually becoming legend or myth, either due to loss of information, revisionism due to state propaganda, or even something gone horribly wrong in the early days. S... (more)	—	almost 7 years ago
Question	—	If I launched a nuclear pulse fission spacecraft to the specified destinations, what would be a good launch window and how long to arrive? I ask because I have a problem trying to find an appropriate launch window around that time or any point in the mid-1980s, and I need to reach Jupiter via Hohmann transfer so I can then use a series of Oberth manoeuvres to get to Pluto from there, with my nuclear spacecraft having a delta v of 100 km... (more)	—	over 8 years ago
Question	—	Under the following conditions, would any technological civilisation build a chemical rocket, and if so, how? I have a captured planet/moon orbiting HD 37124 c, known as HD 37124 c m XVIII, and I was wondering: since the moon has 1.7 Earth masses, 1.1 Earth radii, a density of 7.038 g/cm^3 and a gravitational pull of 1.41 Earth gees, would it be possible for any technological civilisation to reach this moon'... (more)	—	over 8 years ago
Question	—	Can a Whipple Shield be a viable method of space combat protection? Like it says on the tin. Problem? Basic configuration is not going to work. If I used several additional layers and all the Outer and Inner layers using carbon nanotubes, whereas the Middle Layer(s) use(es) Kevlar, Titanium or Aluminium, can they still survive incoming 5 kg guided projectiles of doom... (more)	—	over 8 years ago
Question	—	How does a spacecraft attempt an intercept course with a hostile one realistically (Part II)? Well, gentlemen. Here is Part II. We know what to do about the manoeuvre, but we need to know possible tactical options the two Task Groups would use. Background Now, as previously specified, we have the following statistics from Part I: UNAPA (Main) Ships Antimatter-catalysed nuclear pulse pr... (more)	—	over 8 years ago
Question	—	How can I make an alphabet for a fictional dialect of a real language? The following post is copy-pasted from a similar question on Reddit: Apparently, I already started work on the story and it turns out, that I have Ganymede speaking a fictional Russian dialect called Ganystravian Russian, or simply Ganystravian which is a mix of standard Russian, Ukrainian, Kazakh ... (more)	—	over 8 years ago
Question	—	73 Gigatonnes of TNT upon collision could cause how many casualties? So, after going through a some rough calculations, I figured my earlier question ran into a few problems regarding the final velocity of the asteroid. I pulled the mathematics a bit incorrect, so I dumbed it down to a speed of 40,264.06 m/s at final velocity. The Delta v, though is 26,264.06 m/s, and... (more)	—	over 8 years ago
Question	—	If a colonial uprising occurred (and succeeded to some extent), what would the implications be on extraplanetary policy? So, I ran into a problem regarding the aftermath of a colonial war for independence. What happens is the following: The scenario is this: late 24th Century, humans have colonised the Inner Solar System, the Belt, the Trojans, Europa, Ganymede, Callisto, Io and the Moons and rings of Saturn. The col... (more)	—	over 8 years ago
Question	—	Is the following mission profile appropriate for a manned mission? My idea was to use 2 stages for an interstellar spacecraft (particularly the Orion Drive) and use it in a way similar to Project: Daedalus. Phase 1 would involve accelerating to cruising speed following assembly in orbit, and that cruising speed is 0.04 c, which will then slow down as we approach the... (more)	—	over 8 years ago
Question	—	Is this an appropriate manned interstellar mission profile? My idea was to use 2 stages for an interstellar spacecraft (particularly the Orion Drive) and use it in a way similar to Project: Daedalus. Phase 1 would involve accelerating to cruising speed following assembly in orbit, and that cruising speed is 0.04 c, which will then slow down as we approach the... (more)	—	over 8 years ago
Question	—	If a Mars Race occured, what are its technological implications on the average person? I am working on an alternate history where the USSR won the Moon Race (by upgrading the NK-15, starting development of the N1 earlier, and making cybernetics/computer science not a "bourgeois pseudoscience".), and as a result, there is a race to Mars between the two. However, I noticed that any tech... (more)	—	over 8 years ago
Question	—	What makes a spacefaring civilization, a spacefaring civilization? Aka: What I am asking is: what are the basic elements a society capable of space travel needs? What key factors determine a species'capacity to become spacefaring and what cultural and societal aspects are required to become a spacefaring society? (more)	—	over 8 years ago
Question	—	How to create a realistic, Earth-like exoplanet? Well, I ask the question because apparently I am going to aim for NaNoWriMo. I am calculating the density of a planet with 1.8 Earth masses and 0.9 Earth radii, but last I checked, the calculations gave me 0.59 g/cm3, but I checked with the not-so astronomical masses, and then I had 3.21 g/cm3. Now... (more)	—	about 9 years ago