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Transcript of Astronomy
Heliocentric worldview (Sun in the center)
It takes the earth 24h to spin around its own axis.
The face of the earth that is facing the sun experience day.
The face of the earth facing away from the sun experience night.
Earth has a tilt on its axis of 23.4 degrees
The hemisphere facing the sun experience summer.
The hemisphere facing away from the sun experience winter.
As the earth is orbiting the sun, the seasons change accordingly
Earths natural satellite - The moon
The moon is orbiting the earth every 29 days.
The moon spins around its own axis every 29 days
This means that we always see the same face of the moon.
Solstice and equinox (NH)
Summer solstice (June 21)
Winter solstice (December 21)
Vernal equinox (March 21)
Autumnal equinox (September 23)
Phases of the moon
Half moon (Waxing)
Half moon (Waning)
Solar wind (Aurora Borealis)