Radiometric dating relies on the constant rate of decay of
But more than that, since dark matter is spread evenly (and thinly) all around us, it doesn’t pull in any particular direction.
There’s about the same amount in every direction you point, so there’s very little net pull in any direction.
Even if you dont believe there is 2-way flow, and only 1-way flowthe rate of flow depends upon the temperature of both bodies, and changing the cooler bodys temperature will change the cooling rate (and thus the temperature) of the warmer body.
So, yes, a cooler body can make a warm body even warmer stillas evidenced by putting your clothes on. CO2 CANT CAUSE WARMING BECAUSE CO2 EMITS IR AS FAST AS IT ABSORBS. When a CO2 molecule absorbs an IR photon, the mean free path within the atmosphere is so short that the molecule gives up its energy to surrounding molecules before it can (on average) emit an IR photon in its temporarily excited state. Also important is the fact that the rate at which a CO2 molecule absorbs IR is mostly independent of temperature, but the rate at which it emits IR increases strongly with temperature. This one is a little more subtle because the net effect of greenhouse gases is to cool the upper atmosphere, and warm the lower atmosphere, compared to if no greenhouse gases were present.
So, heres my Top 10 list of stupid skeptic arguments. The second law can be stated in several ways, but one way is that the net flow of energy must be from higher temperature to lower temperature. The apparent violation of the 2nd Law seems to be traced to the fact that all bodies emit IR radiationincluding cooler bodies toward warmer bodies.
If you do consider things on a galactic scale (~100,000 lightyears), then there’s more dark matter in the direction of Sagittarius (in December this is overhead around midnight). The big difference between dark matter and ordinary matter is that dark matter is “aloof” and doesn’t interact with other stuff. Matter on the other hand smacks into itself and clumps together.The big commonality is that both of them create and are affected by gravity.Matter has more of a “big-clump-or-nothing” deal going on.If you start with a big cloud of ordinary matter, then eventually (it can take a while) you’ll have one or two huge chunks (stars, binary stars, that sort of thing) and the few crumbs that escape tend to end up clumping together themselves (planets, moons, comets, your mom, etc.).