microwave radiation does not raise the temperature of water. It cause water to rotate in frequency with the incident light. The heightened rotations cause more vibrations in the system, which tries to relax by emitting heat. Which is IR and NIR light
Um, an asteroid in the planets atmosphere is called a meteorite, not a comet. A comet is a fast moving ball of ice that orbits the sun. Also, ton is also a measure of mass, so the asteroids are weightless, but not massless