Whether the observer is located on the earth or somewhere off of it, the most visible part of the earth has to be its solid outer surface. With instruments capable of detecting parts that are not visible, the most easily observed part is the atmosphere. To an ordinary observer located on the earth, the most visible part is the ground beneath his feet.
The sky is the atmosphere of Earth and any visible part of the universe, as observed from Earths surface.
no it's infared radition
Of course - most mass is not visible.
The blue part of the spectrum has more energy than the red part.
visible light
the sun
Visible light
patrol
lunar eclipse
Thermosphere
The ozone part of atmosphere. It is the most precious part.
Well! the earth is covered by water which 70% and the part of the earth have oceans so the part that holds the most water is oceans.