Originally posted by Endless Mike
Vaporizing a gravitationally bound body (moon or planet for example) takes far less energy than actually destroying it.If the Earth were to be vaporized, the vapor would still have the same mass as the original matter of the earth, and gravity would pull it back together. The gas giant planets like Jupiter and Saturn are made of gas (vapor) and they hold together just fine. To destroy a gravitationally bound body you have to scatter its mass in all directions to the point where gravity cannot pull it back together again. This takes far more energy.
If you claim otherwise you are scientifically ignorant.
I'm just guessing, but seems to me that the energy required to vaporize the Earth would be enough to trigger some chemical reactions in the process, wherein some mass of the Earth would be converted into energy which would not be recovered (albiet, a tiny fraction).
Also, the heat of vaporization could conceivably imbue some molecules with enough kinetic energy, such that, some molecules would be flung out beyond gravity's reach (similar to the explanation as to why black hole activity at galactic centers is sometimes cold, sometimes hot).
But, may I ask, what is the purpose of this thread?