Ultimate space simulation software

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by Watsisname
19 Jun 2018 12:22
Forum: Feedback and Suggestions
Topic: Ringworlds?
Replies: 11
Views: 645

Ringworlds?

Sure thing mate.  I know it'd be neat if they could form naturally like that, but the universe just really prefers other shapes. https://i.imgur.com/XWK0pLk.png An interesting discussion could perhaps be made for how such a world could be constructed artificially.   JackDole has also done a lot of c...
by Watsisname
19 Jun 2018 08:51
Forum: Feedback and Suggestions
Topic: Ringworlds?
Replies: 11
Views: 645

Ringworlds?

Your scenario would result in a planet (or a few).  Any part of the disk that is denser than the surroundings -- even slightly -- will pull more material into it from all sides.  Or even by random chance, some asteroids will clump into a more massive one than average, resulting in a similar instabil...
by Watsisname
19 Jun 2018 06:18
Forum: Feedback and Suggestions
Topic: Ringworlds?
Replies: 11
Views: 645

Ringworlds?

They are not possible in nature (maybe artificially, but that raises other questions).  We never observe them in planet-forming simulations, even if the mass of the nebula was very high.   The reason is that gravity acts to pull things into spheres.  Gravity cannot act to compress things into a sol...
by Watsisname
19 Jun 2018 05:34
Forum: Space Journeys
Topic: Image Dump
Replies: 1642
Views: 161459

Image Dump

These last three are spectacular, Aborygen.

I also like the landscape in your eclipse shot, vlad01, it looks very realistic and Earthlike.
by Watsisname
18 Jun 2018 06:53
Forum: Science and Astronomy Discussions
Topic: Solar System dynamics discussion thread
Replies: 17
Views: 620

Solar System dynamics discussion thread

Yeah, but that means its orbit is now hyperbolic, so it won't be coming back. :)
by Watsisname
18 Jun 2018 06:38
Forum: Science and Astronomy Discussions
Topic: Solar System dynamics discussion thread
Replies: 17
Views: 620

Solar System dynamics discussion thread

20957 Don't worry Watsisname you made such a great work with all your explanation. No need to see the actual orbit. I was just curious about it. Well I wanted to find out what it would do as well, plus I'd like to be able to handle more general scenarios.  C/2011 W3 Lovejoy is about as extreme as i...
by Watsisname
15 Jun 2018 01:40
Forum: Science and Astronomy Discussions
Topic: Solar System dynamics discussion thread
Replies: 17
Views: 620

Solar System dynamics discussion thread

Wow, thank you SpaceEngineer , and I'd be honored!  I think that, especially as more great explanations accumulate in this thread and combined with the Astronomy Q&A thread, it would be great to have something like a section of the website dedicated to them as an educational tool. I have a bit o...
by Watsisname
12 Jun 2018 00:25
Forum: Science and Astronomy Discussions
Topic: Solar System dynamics discussion thread
Replies: 17
Views: 620

Solar System dynamics discussion thread

Well, shoot.  I wanted to split that up into spoilerized sections to make it less obnoxious to read, but spoiler tags seem to break with it. P.S.    The length of that post is not  indicative of what I expect everything else will or should look like.  It's just that relativity is one of my favorite ...
by Watsisname
12 Jun 2018 00:04
Forum: Science and Astronomy Discussions
Topic: Solar System dynamics discussion thread
Replies: 17
Views: 620

Solar System dynamics discussion thread

The Anomalous Advance of the Perihelion of Mercury Background: Often in discussions of Mercury's perihelion advance, the effect is shown greatly exaggerated.  Sometimes even the orbit is shown much more eccentric than it really is.  Before we dive in, let's take a moment to get some perspective on ...
by Watsisname
10 Jun 2018 06:22
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 991
Views: 86994

Science and Astronomy Questions

I have not used it myself, but I have been told that brilliant.org is very good.
by Watsisname
10 Jun 2018 06:20
Forum: Science and Astronomy Discussions
Topic: How do you think we can get to Proxima b?
Replies: 48
Views: 2533

How do you think we can get to Proxima b?

Terminology: Atoms or particles being knocked off of a material (e.g. by high energy particle strikes) = sputtering Bonds breaking by the absorption of a photon =  photodissociation Removal of electrons from an atom = ionization , or   photoelectric effect in the context of electrons ejected from a...
by Watsisname
09 Jun 2018 20:31
Forum: Science and Astronomy Discussions
Topic: How do you think we can get to Proxima b?
Replies: 48
Views: 2533

How do you think we can get to Proxima b?

I think I would recommend avoiding using the word "erosion" to anything involving atoms, like FFT said.  To apply it to atoms doesn't make much sense and I've never seen it used in the scientific jargon.  Hence my earlier question about what Propulsion Disk was imagining.  All processes in...
by Watsisname
09 Jun 2018 18:57
Forum: Science and Astronomy Discussions
Topic: Solar System dynamics discussion thread
Replies: 17
Views: 620

Solar System dynamics discussion thread

You chose the coolest and most appropriate image possible to head this topic. :) Great idea, and this should be very interesting and fun to work through.  I have no clue how much we can cover or how in depth we can go, but I'm excited for it! I am currently writing up some explanation for the last o...
by Watsisname
08 Jun 2018 08:18
Forum: Science and Astronomy Discussions
Topic: How do you think we can get to Proxima b?
Replies: 48
Views: 2533

How do you think we can get to Proxima b?

You're talking about bonds breaking, not atoms being destroyed.  If a photon breaks atomic bonds it is called  photodissociation.   It requires photons of sufficient energy.  For example, ultraviolet photons can dissociate ozone (O3) molecules in the atmosphere. Sufficiently energetic photons can al...
by Watsisname
08 Jun 2018 06:23
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 211
Views: 36824

Unusual weather

I hoped for cooler wet weather, and I got more than I bargained for.  Snow is coming to the mid elevations (~1200m).  In June!  Very unusual to get snow this low this late in the season.

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