o We have seasons because of the axis of the Earth/
o We rotate every 24 hours, which equal our day. We revolve around the sun and that equals our year or 365 days
o We get our energy from the nuclear fusion that radiates to the Earth from the Sun
o Our matter is mostly spherical because of gravity pulling in all directions.
o A light year is the time it takes for light to travel in one year; 186,000 mph
o Gravity is responsible for our solar systems