what is the safest place to live in russia? I like Siberia, but I am looking for a place that is clean, has low crime rate, and decent temperatures in the summer. much like krasnoyarsk but with cleaner air. Also, are you looked at badly if you do not work, you just retire there?
Murcury has a small diameter as was previously stated, it has a slow rotation, and a weak magnetic field. The weak magnetic field probably expells some of the suns solar winds. and the Poles of Mercury are topsy turfy and drift a bit. Because its small, spins slow, and due to its weak magnetic field it has very little atmosphere is the answer.
Diameter, look on the net there's a chart for schedule 40 PVC pipe sizes google, images
Planetary gravity is completely dependent on how much the object weighs. I don't care if a planet is the size of a marble, if it weighs more than another object, it has more gravity than the other object. Planetary gravity depends on how much an object bends space. Space may be invisible but there is stuff there. It's like a fabric, like a rubber sheet. The more an object weighs, the more it bends space thus the more gravity it has. Mercury weighs less than Earth so the force of gravity on Mercury is less. Again, it's all about how much an object weighs that determines how much gravity it has. Interesting note: The Sun has 99.8% of all the mass of our solar system. The 8 planets, 5 dwarf planets, hundreds of moons, and countless asteroids and dust all only weigh 0.2% of everything in our solar system. That is why everything orbits around the Sun because it is so incredibly massive and bends space so much, that we are all in the Sun's bent space so we orbit around it.
