Moon has almost 0 Axial tilt. You would just see a thin line across the sky and never see much of the disk. 

But what if you add some really big rings. Like you did to Mercury adding Saturn rings. Or even some larger rings that could be more visible in the sky.

If that was the case we would have this here. 


Picture taken on north pole.

Moon has almost 0 Axial tilt. You would just see a thin line across the sky and never see much of the disk. 

But what if you add some really big rings. Like you did to Mercury adding Saturn rings. Or even some larger rings that could be more visible in the sky.

If that was the case we would have this here. 


Picture taken on north pole.

Okay, this is enough. I will stop requesting for this day. And thanks for your time!

Given the nature of comet tails or coma, is it possible to observe rainbow or similar phenomena on a comet?

Given the nature of comet tails or coma, is it possible to observe rainbow or similar phenomena on a comet?

Interesting question.  On Earth there are multiple ice halos (arcs, sundogs, etc) which form when light is reflected or refracted in ice crystals.  The effect depends on the shape of the crystals, and also their alignment.  The latter is a problem in space.  There's little in vacuum to align the crystals.  They just scatter pretty randomly.  So I think it will be much harder to observe such halos on a comet.  Most of the halos we see on Earth would not be possible (like sundogs, arcs, pillars).  So I think it's safe to say that to the degree such phenomena form at all beyond fogginess, they would be less exciting than the earthly counterparts.

Lets say that if we somehow built a very tall tower on the near facing side of the moon, this tower would probably need to be miles high. Would it be possible to get internet connection on the Moon?

Interesting question.  On Earth there are multiple ice halos (arcs, sundogs, etc) which form when light is reflected or refracted in ice crystals.  The effect depends on the shape of the crystals, and also their alignment.  The latter is a problem in space.  There's little in vacuum to align the crystals.  They just scatter pretty randomly.  So I think it will be much harder to observe such halos on a comet.  Most of the halos we see on Earth would not be possible (like sundogs, arcs, pillars).  So I think it's safe to say that to the degree such phenomena form at all beyond fogginess, they would be less exciting than the earthly counterparts.

Wow that looks so interesting. What is the reason for the alignment here on Earth? I didn't knew that for a sundog to form the crystals needed to be aligned.

Wow that looks so interesting. What is the reason for the alignment here on Earth? I didn't knew that for a sundog to form the crystals needed to be aligned.

See http://www.atoptics.co.uk/halo/orplate.htm.
The entire site contains a wealth of information and wonderful pictures.

Lets say that if we somehow built a very tall tower on the near facing side of the moon, this tower would probably need to be miles high. Would it be possible to get internet connection on the Moon?

Just if you deactivate your bluetooth.

The problem is that every signal require at least one second to physically reach the earth, so it would be so slow you basically couldn't use

You get high latency, but the bandwidth can be ok.  So, depending on what kind of communication you have, things can work find or poorly.  Downloading can be fine. Online gamers will suffer badly.

Fast communication channels will be indeed an issue, once we are on Mars.
Relative distance Earth-Mars varies from 54.6 million km to 401 million km. So electromagnetic signals will need from slightly more than 3 to more than 22 minutes to travel that distance.

So electromagnetic signals will need from slightly more than 3 to more than 22 minutes to travel that distance.

Not if you are using advanced quantum tunnel communication.
This, of course, has yet to be invented.

Not if you are using advanced quantum tunnel communication.

Which works every time the receiver and transmitter happen to quantum tunnel next to each other?  So, it works, if you disregard the poor uptime.

So electromagnetic signals will need from slightly more than 3 to more than 22 minutes to travel that distance.

And not just electromagnetic signals, but any conceivable signal.

[youtube]msVuCEs8Ydo[/youtube]

And not just electromagnetic signals, but any conceivable signal.

[youtube]msVuCEs8Ydo[/youtube]

Quite hard to understand because of my poor english, but I kind of get what he meant. Very very interesting!
I always considered "c" velocity as a consequence of space-time "friction", as much as you reach that speed, the force you need to win the space-time friction is always higher and higher. I know it's a wrong concept, but it helps imagining what keeps every object "below" that speed.
The only part of the video I didn't understand (and it's the central one so probably the most important) is why you don't need to delete earth motion around the sun and such. I mean... Galileo's transformations are wrong, ok, but why doesn't "c" depends on reference frame? 

Quite hard to understand because of my poor english, but I kind of get what he meant.

Trust me, I struggled to follow even myself despite having a really good English