Alnilam, what a great username! The real Alnilam is a magnificent blue supergiant!
That's Alnilam in the center!
Now to some of your questions:
- why all planets except Uranus ?
If you ask me, I think they thought Uranus was unnecessary and boring. Uranus is very similar in size to Neptune, and it is paler in color and visually featureless, so it looks more boring than Neptune.
- why all planets with their atmosphere and Venus without ? (giant planets would be very strange without their huge atmosphere !!!)
I think the reason for the denuding of Venus is the same as the reason for the exclusion of Uranus - they thought Venus with its atmosphere looks boring! Like Uranus, Venus has featureless cloudtops. Also, Venus is visually white, and I think these guys prefer red and orange over white. By divesting Venus of its atmosphere, they could show the planet's rocky surface features and color them orange, too!
- almost all planets rotate in the wrong way ! (see previous comments)
I didn't notice that, and I wouldn't pay attention to that, but I believe you.
- our sun is not so orange ! (this "color" is popular through "false color" images from SOHO/SDO, in fact it's almost white, lightly yellow, from a human visual point of view)
I couldn't agree more!!!
- all stars will be very very much brighter if seen at a so "close" point of view ! (incoherent with the planets, except if a very selective filter is used, but the video don't suggest that)
Artistic licence, I suppose.
![Wink :wink:](./images/smilies/icon_wink.gif)
It would be hard to show off star colors if you attempted to even approach the true brightness of stars here - and of course, you would blind anyone who stared at your video and saw all those blindingly bright stars pass by!
- the size of the biggest star seems to be under discussion yet : from 1.400 to 2.100 sun diameter ? The video gives the upper estimation.
If the lower estimation is good, other stars could be bigger : VV Cephei A, V354 Cephei, KW Sagitarii, KY Cygni, Mu Cephei. And what about "objects" like IRS5 ?
Interesting. I didn't know that. I have a confession to make - since I am so strongly into things that can be at least potentially blue, the biggest stars don't interest me much, I'm afraid, since they can never be blue.
Well, good points, Alnilam!
Ann