God is responsible for the physics of the solar system and the earth?
Only if you believe he designed and created it all.
Even then it is just your belief, which is not proven fact.
God did create and design the universe.
No matter how you look at it, we are not here just by accident.
By unwavering mathematical law we can prove that our universe was designed and executed by a great engineering intelligence.
Suppose you put ten pennies, marked from one to ten, into your pocket and give them a good shuffle. Now try to take them out in sequence from one to ten, putting back the coin each time and shaking them all again. Mathematically we know that your chance of first drawing number one is one in ten; of drawing one and two in succession, one in 100; of drawing one, two and three in succession, one in 1000, and so on; your chance of drawing them all, from number one to number ten in succession, would reach the unbelievable figure of one in ten billion.
By the same reasoning, so many exacting conditions are necessary for life on the earth that they could not possibly exist in proper relationship by chance. The earth rotates on its axis 1000 miles an hour at the equator; if it turned at 100 miles an hour, our days and nights would be ten times as long as now, and the hot sun would likely burn up our vegetation each long day while in the long night any surviving sprout might well freeze.
Again the sun, source of our life, has a surface temperature of 10,000 degrees Fahrenheit, and our earth is just far enough away so that this "eternal life" warms us just enough and not too much ! If the sun gave off only one half its present radiation, we would freeze, and if it gave as much more, we would roast.
The slant of the earth, tilted at an angle of 23 degrees, gives us our seasons; if the earth had not been so tilted, vapors from the ocean would move north and south, piling up for us continents of ice. If our moon were, say, only 50,000 miles away instead of its actual distance, our tides might be so enormous that twice a day all continents would be submerged; even the mountains could soon be eroded away. If the crust of the earth had only been ten feet thicker, there would be no oxygen, without which animal life must die. Had the ocean been a few feet deeper, carbon dioxide and oxygen would have been absorbed and no vegetable life could exist.
It is apparent from these and a host of other examples that there is not one chance in billions that life on our planet is an accident.