Last night in bed I noticed that it was light enough in the room to see - apparently a combination of moonlight and snow on the ground. How much might moonshine affect temperature? Too little to be measureable, I suspect, but still calculable. What is the temperatue cycle of the surface of the earth and how is it affected by earth-shine?
What is the ratio of moon-mass to earth-mass?
How far is the center of mass of the earth-moon complex from the center of the earth?
Does the moon create tides inside the earth?
How much do tides slow down the earths rotation and what must the effect on the moon be to preserve angular rotation of the system?
What caused the earth's tilt? Season's are caused by tilt, not distance, but shouldn't have some affect? What is it?
What other planets and moons generate internal heat, like the earth? What is the ratio of internally generated to heat from the sun?
Why don't continents sink? Of couse the answer is that their material is lighter than the magma they float upon. I suppose the higher the mountain, the deeper the keel. Could the potential energy in mountains be captured?
What causes magnetic poles to move? Why does the magnetism of earth reverse periodically and how often does it occur?
Doesn't snow reflect more sunlight into space? Could we stop global warming by painting the earth white? Or green with trees? [There is always the question: "Is the possible practible?"] At least make roads and parking lots white.
Could we use solar energy on the moon to have robots self-replicate? [Ok, the answer is "No."] Could robots mine the moon and manufacture more solar panels? The problem is no (or at least insufficient) water.
Could floating solar panels (or offshore wind turbines) be used to create pure water from sea water? In sufficient quantities to be useful?
I was just wondering.
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