Light Year
The Big Bang theory
Seasons and the length of the day
Eclipse of the Moon
An Astronomical Unit (AU)
Day and night
Eclipse of the Sun
It is an average distance between the Earth and the Sun
rotation
They are consequences of the Earth´s rotation
It happens when the Earth is positioned between the Sun and the Moon and stops the Moon from reflecting light from the Sun.
They are consequences of the Earth´s revolution
It explains the creation of the Universe and its expansion
It happens when the Moon is positioned between the Sun and the Earth.
low tide
Is the distance which light travels in a year.
revolution
