This is my first post and I hope that some of my questions make sense.
1.) Imagine standing on Pluto on a bright sunny summerday while his Orbit is closest to the sun. How bright would I percieve this? How would the scenery look to me? And the sky? Is it like night on earth just without the moon? Will the sun be even noticeable? As for a comparison and to make brightness more understandable: How long would my run-of-the-mill Digital Camera have to expose to get a portrait of me? And how about the farthest point of the Orbit?
Is it like a candle in a Football stadium?
And how would that be on Titan with its dense Atmosphere?
2.) I always imagine an enclosed Vacuum as a super-light gas (I know what a Vacuum is but to get it into my frame of mind I tend to use analogies).
So if I had a sturdy container filled with air floating on the water and I'd removed the air, will it float or sink??
and if it floats..
If I could create a balloon-shaped Force-Field and remove the Air, will I fly? And then.. how high?
3.) As often showed on Mythbusters there is an ultimate Velocity something can drop through an atmosphere when it is only propelled by gravity (9,81 m/s2). Is Air-resistance the only limiting factor? So if I would drop an arrow made of Tungsten or Lead what speed can it reach? And when i repeat the same experiment in Water, say the Marianen-Graben (don't know the proper english name), will the dense Water (not in the sense of deuterium) decellerate the arrow significantly?.
4.) I am a very close follower of the Cassini Mission (in fact I stood beside the Twin-Brother of Huygens here in Darmstadt (one of the most exciting moments of my life)), but unfortunately I never got a chance to get a close look at Cassini. My special interest is the Engine-Cover. Can anyone elaborate how this works or provide me with a spec or an image of it?
Thank you very much and I hope those Questions aren't too dumb