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Message: <blockquote data-quote="tomBitonti" data-source="post: 6636948" data-attributes="member: 13107">To say, Interstellar shows two different phenomena: The initial step of the journey is through a wormhole which orbits Saturn.  A journey through that wormhole takes you to the black hole, Gargantua.  There were depictions of both the wormhole and of the black hole.  My understanding is that we have a pretty good idea of lensing effects around a black hole.  Here is a discussion of the black hole images from the movie:<a href="http://io9.com/the-truth-behind-interstellars-scientifically-accurate-1686120318" target="_blank">http://io9.com/the-truth-behind-interstellars-scientifically-accurate-1686120318</a>Kip Thorne did evidently collaborate closely with the movie producers:<a href="http://www.space.com/27701-interstellar-movie-science-black-holes.html" target="_blank">http://www.space.com/27701-interstellar-movie-science-black-holes.html</a>There is a nice view of the wormhole here:<a href="http://www.quora.com/Why-did-the-wormhole-depicted-in-the-movie-Interstellar-have-an-outward-bending-of-light-at-the-periphery-of-the-sphere" target="_blank">http://www.quora.com/Why-did-the-wormhole-depicted-in-the-movie-Interstellar-have-an-outward-bending-of-light-at-the-periphery-of-the-sphere</a>I don't think that the wormhole in this depiction is actually "shiny": The apparent reflection at the edges is more an illusion of the way the light reaches us through the wormhole.I would presume that there would be effects on the outside of the wormhole, too, but, these are not visible because they are too faint.  That would be lensing of the background field, but it would seem to be much fainter than what would be visible through the wormhole, and would be washed out of the view to the naked eye.I would think that the image is correct for a specified topology and curvature, but very possibly inaccurate in that additional effects are not depicted, say, particle creation (the worm hole might be a strong particle emitter), or instabilities (the wormhole, as shown, is perfectly uniform).  Then there is the problem of a mass-energy distribution which could create the curvature (egad!)In any case, I imagine the view is much more realistic than the "funnel in space" type view, for example, from Farscape:<a href="http://www.foundation3d.com/index.php?categoryid=38&p13_sectionid=376&p13_fileid=461" target="_blank">http://www.foundation3d.com/index.php?categoryid=38&p13_sectionid=376&p13_fileid=461</a>I do wonder what the view would be for a non-spherically symmetric wormhole, e.g. Sliders or Stargate.  Could you actually move curvature to the edges and have simple uncurved flat transition at the center?Here is a thought experiment: Would a spherically symmetric wormhole create a detached space representing the prior "interior"?  That is, in 2D, if you glued two sheets together and cut a hole in them, then stretched both sheets to make for a smooth transition around the edges, that would leave you with the two cut discs, which you could also smooth out to make a closed but unbounded space.  (I've used this in one my games as a prison for a Mythic Rune Giant <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":-)" title="Smile    :-)"  data-smilie="1"data-shortname=":-)" /> )Edit: There is a nice animation of a black hole moving across an edge on view of a galaxy:<a href="http://en.wikipedia.org/wiki/Gravitational_lens" target="_blank">http://en.wikipedia.org/wiki/Gravitational_lens</a>And if you are up for the maths, here is a discussion of wormhole lensing:<a href="http://www.nipne.ro/rjp/2012_57_3-4/0736_0747.pdf" target="_blank">http://www.nipne.ro/rjp/2012_57_3-4/0736_0747.pdf</a>Thx!TomB</blockquote>

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