Ultimate space simulation software

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by An'shur
21 Sep 2018 08:29
Forum: Off-topic Discussions
Topic: Sci-Fi (and other genre) Movies & TV Series
Replies: 15
Views: 2380

Sci-Fi (and other genre) Movies & TV Series

Stargate since childhood, I like all the movies and series, including SGU. I haven't seen much of TOS, but I like Star Trek in general, with DS9 being the best in my opinion. Regarding Star Wars, both originals and prequels occasionally make me want to re-watch again and again :) but I harshly disli...
by An'shur
15 Sep 2018 06:14
Forum: Off-topic Discussions
Topic: Dreams you've had
Replies: 102
Views: 31054

Dreams you've had

I had one interesting dream today in the morning. I was on Mars leading an anti-Earth rebellion. I recall commanding one of my underlings to close every spaceport to ships inbound from Earth. My command base was a large pyramid-like structure armed to the teeth. The air was breathable, but rusty or...
by An'shur
09 Sep 2018 09:30
Forum: Off-topic Discussions
Topic: The Future of Humanity & Intelligent life in the universe
Replies: 247
Views: 47430

The Future of Humanity & Intelligent life in the universe

22654 ... I've read through the links and concluded that even though the universe contains virtually limitless amount of resources, a civilization with exponential growth pattern would not be able to sustain itself. We can see it happening with humans. Overabundance of resources would lead to overi...
by An'shur
08 Sep 2018 03:11
Forum: Off-topic Discussions
Topic: The Future of Humanity & Intelligent life in the universe
Replies: 247
Views: 47430

The Future of Humanity & Intelligent life in the universe

My take on FTL-capable alien civilizations As discussed in  this  FFT's thread, over time, very small perturbations in the orbit of Uranus were measured, allowing the discovery of Neptune.  Without  computers, to emphasize. The amount of data and the time span required amazes me. It was nearly impo...
by An'shur
31 Aug 2018 02:17
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1098
Views: 102935

Science and Astronomy Questions

Many super-Earth sized planets we have found outside of the Solar system are speculated to contain a lot of water. This implies a ~100 kilometers deep ocean bottomed by high pressure ice. I remember reading somewhere, that the ocean would be mineral-poor, lowering the chance of life arising there. Q...
by An'shur
10 Aug 2018 06:57
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1098
Views: 102935

Science and Astronomy Questions

JackDole , Yes, the third example seems impossible, at least not with one epicycle. I attemped it, but the planet is slowest near the ellipse focal points. If you imagine the epicycle's (I used a barycenter) orbital period to be 1 and that of the planet -1, then you get an ellipse with the Sun in t...
by An'shur
10 Aug 2018 03:07
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1098
Views: 102935

Science and Astronomy Questions

JackDole , I cannot outright claim that your approach with the first configuration is incorrect either. But unlike your second gif, the binary stars in the video have retrograde orbits. (Which should not be a problem in SE at all anyway) The next examples: To me the green market orbit of the two st...
by An'shur
10 Aug 2018 02:43
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1098
Views: 102935

Science and Astronomy Questions

Watsisname wrote:
An'shur wrote:
Qr Bbpost I might have been overlooked 

Sorry An'shur -- I didn't overlook it, but I don't know of the answer offhand.  I may try to figure it out when I have the opportunity.

Nevermind, I'll wait. ;)
by An'shur
09 Aug 2018 10:32
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1098
Views: 102935

Science and Astronomy Questions

I came across an interesting video. I am wondering how could I calculate the orbital period of the configuration at 3:32. I know all of these are three body orbits which are unstable, but the one I am interested in appears to be doable in Space Engine. 8_RRZcqBEAc Edit: https://upload.wikimedia.org...
by An'shur
08 Aug 2018 03:59
Forum: Space Journeys
Topic: The "That Totally Looks Like _____" Thread
Replies: 88
Views: 15252

The "That Totally Looks Like _____" Thread

Terraformed Mars look-alike

Image
by An'shur
06 Aug 2018 10:06
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1098
Views: 102935

Science and Astronomy Questions

I came across an interesting video. I am wondering how could I calculate the orbital period of the configuration at 3:32. I know all of these are three body orbits which are unstable, but the one I am interested in appears to be doable in Space Engine. 8_RRZcqBEAc Edit: https://upload.wikimedia.org/...
by An'shur
04 Aug 2018 06:16
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1098
Views: 102935

Science and Astronomy Questions

Epicycles are also "right" if you keep adding enough of them I came across this nice illustration how any orbit can be described by epicycles: QVuU2YCwHjw Wow...  Speaking of epicycles, I created this impossibility. https://imgur.com/a8wccle.gif https://i.imgur.com/Y6xxN1o.jpg The epicycl...
by An'shur
01 Aug 2018 02:27
Forum: Mods and Addons
Topic: Mods and Addons - Requests, suggestions and ideas
Replies: 267
Views: 42350

Mods and Addons - Requests, suggestions and ideas

A height map of Earth with Greenland and Antarctica without ice would be very interesting.  I do not mean procedural Earth with tweaked weather, which would leave these two landmasses as 2-4k high plateaus. I mean something like this: https://upload.wikimedia.org/wikipedia/commons/8/8b/Topographic_m...
by An'shur
22 Jul 2018 09:51
Forum: Science and Astronomy Discussions
Topic: Solar System dynamics discussion thread
Replies: 83
Views: 4466

Solar System dynamics discussion thread

A question: If the bodies are really massive (merged?) black holes, could the slopes down from L4 and L5 be so steep so these points become a kind of massless "white" hole?   midtskogen , that is an  amazing  question.  Off hand, my gut feeling is that it cannot, but I do not know for sur...
by An'shur
09 Jul 2018 01:28
Forum: Mods and Addons
Topic: An's Addon Database
Replies: 18
Views: 3758

An's Addon Database

Palauan wrote:
Nice!

Thanks!