It is constantly changing
What is earth?
The first human in space.
Who is Yuri Gagarin?
Equal day and night hours
What is an Equinox?
The distance the sun is away from Earth.
What is 150 million kilometres? or 1 AU
The first man to perform a space walk
Who is Alexi Leonov?
This causes Earth's seasons.
What is Earth's Axial tilt?
The distance of the moon. from Earth
What is 240 000 miles away?
When the Earth comes between the sun and the moon
What is a lunar Eclipse?
The fraction of gravity on the moon compared to Earth.
What is 1/6 ?
When the entire disk of the sun is blocked
What is a total eclipse?
Protects the earth from the sun's dangerous rays
What is the atmosphere?
Happens when the sun and the moon work together on Earths tides.
What is a spring tide?
These happen when the moon comes between the sun and the earth.
What is a solar eclipse