Ultimate space simulation software

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by Watsisname
30 Dec 2016 05:43
Forum: Feedback and Suggestions
Topic: General questions about SpaceEngine
Replies: 606
Views: 131884

General questions about SpaceEngine

No, SE's universe is larger by about a factor of three.

The observable universe has a comoving radius of about 14Gpc, or a volume of 11,500Gpc3.  SE's universe is a cube with a radius of about 16Gpc, or a volume of about 33,000Gpc3.
by Watsisname
28 Dec 2016 20:51
Forum: Troubleshooting and Solutions
Topic: Troubleshooting and bug reports - SpaceEngine 0.9.8.0
Replies: 1591
Views: 303575

Troubleshooting and bug reports - SpaceEngine 0.9.8.0

rjracer007, this is normal for Space Engine.  Currently SE calculates orbits with a fairly simple 2-body method, but in reality the Moon's orbit is more complex because of the Sun's gravity.  So for now eclipses are not accurate -- to fix this will require an update to the orbital calculations.
by Watsisname
28 Dec 2016 12:39
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1037
Views: 221445

Totally off-topic thread

Just a bit more to add -- I think this is a really useful visualization to supplement the explanation above.  It's mathy, but a good combination of physics and road safety.  Here I'm showing  the maximum acceleration we can get by braking before we lose control, for any given curve and any given sta...
by Watsisname
28 Dec 2016 07:46
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1037
Views: 221445

Totally off-topic thread

I forgot to mention that the road was uphill, in that case was the coefficient of friction higher because the slope exercised an "additional force"? Oh yes, the slope will be another factor. This is not because it provides an additional force, but because it decreases the strength of the ...
by Watsisname
27 Dec 2016 11:54
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1037
Views: 221445

Totally off-topic thread

That's actually a fairly common experience and I've nearly had an accident that way, myself.  It's pretty scary!  And it all comes down to physics. All objects will move in a straight line with constant speed unless acted on by some force.  Your car is no different.  If you're driving through a curv...
by Watsisname
24 Dec 2016 23:14
Forum: Space Journeys
Topic: Image Dump
Replies: 2783
Views: 489508

Image Dump

Ah, non-intuitive reality strikes again.  You're not inside it. :)  
by Watsisname
24 Dec 2016 12:30
Forum: Space Journeys
Topic: Image Dump
Replies: 2783
Views: 489508

Image Dump

Imperishable Night

Image
by Watsisname
24 Dec 2016 12:01
Forum: General Discussions
Topic: Can anyone find a Habitable Rogue planet?
Replies: 32
Views: 14742

Can anyone find a Habitable Rogue planet?

It's the only one I've found so far -- I'd never really thought to look for them before and this was my first quick and deliberate search. :)   In the search settings, try putting the main star as "planemo", object as "planet and moon", set the planet to "gas giant" and...
by Watsisname
24 Dec 2016 03:55
Forum: Space Journeys
Topic: Image Dump
Replies: 2783
Views: 489508

Image Dump

Julian wrote:
This year, let the entire Space Engine universe be your Christmas tree!

Awesome image!
by Watsisname
24 Dec 2016 01:45
Forum: General Discussions
Topic: Can anyone find a Habitable Rogue planet?
Replies: 32
Views: 14742

Can anyone find a Habitable Rogue planet?

Space Engine's tidal heating formula may not be perfectly realistic (it's a simple model for the dissipation of energy in tidal evolution, which itself is pretty accurate, but computing surface temperature based on the tidal heating depends on properties of the world and its atmosphere which are ver...
by Watsisname
23 Dec 2016 21:28
Forum: General Discussions
Topic: Can anyone find a Habitable Rogue planet?
Replies: 32
Views: 14742

Can anyone find a Habitable Rogue planet?

You all forget tidal heating. :)  You can certainly find habitable worlds with no sun.

Image
by Watsisname
23 Dec 2016 17:17
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1037
Views: 221445

Totally off-topic thread

Marvelous photo.  I love those kinds of projections. :)
by Watsisname
23 Dec 2016 01:36
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1713
Views: 304756

Science and Astronomy Questions

Watsisname , interesting. So in order for a photon to escape from inside the event horizon, it would have had to be omitted in a very narrow window of time, and even then, the red-shift alone would make it almost impossible to detect.  Precisely.  If emitted very close but just above the horizon, t...
by Watsisname
22 Dec 2016 19:18
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1713
Views: 304756

Science and Astronomy Questions

Would you all agree that if you were to look at the event horizon of a black hole, it would be absolutely black? It would be the blackest black that was ever black.   Your idea reminds of a more common question: "if material falling into the hole is frozen in time at the event horizon, then wo...
by Watsisname
22 Dec 2016 04:55
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Videos
Replies: 460
Views: 91680

Science and Astronomy Videos

Oh snap, he quoted me in the Q&A. :)