the solar system
This sucks jon haddad
An early collision by (proto) Earth with a large protoplanet..
the sources of heat is the sun and the solar system this makes the earth have heat and energy. The sun is the earth main source of heat and energy
None. Both the sun AND earth are older than the moon. No. It appears that the Moon is slightly younger than the Earth. Current theory for its creation is that an object, a protoplanet about the size of Mars called Theia, struck the Earth during its early formation, ejecting matter that consolidated into the Moon. The Sun is older than both the Earth and Moon, but only by a small amount.
In science, the word "theory" is USUALLY used for well-established theoretical frameworks, that are generally accepted as being true. This is the case with the theory on protoplanets - it is generally held to be true.
Currently, the most accepted theory is that it resulted from a crash between a large planetoid (or "protoplanet") and Earth.
Karl Marx proposed the theory of communism.
the 69 theory LOL
1905
There was no concrete evidence that led Dalton to propose his atomic theory. He proposed this theory based on logical explanations about the behavior of elements, gases or materials.
when he died :P
Democritus
Charles Darwin
yes
To propose a Theory and to make a Theory into a Law
Darwin .