Hubble space telescope, Hubble deep field guide, moon, mercury, Saturn, sun, galaxy messier 101
1,000 milligrams = 1 gram
2,000 milligrams = 2 grams
3,000 milligrams = 3 grams
4,000 milligrams = 4 grams
Gravitational energy is a form of potential energy because it is dependent on the mass of an object and needs to be calculated for the specific object.
Ozone in troposphere is also know as Bad Ozone, Evil Ozone and Ground Level Ozone.