Earths seasons.

Copernicus- Polish astronomer who had a theory that Earth and other planets revolved around the sun.

Why do we have seasons?

We have seasons because the earth is tilted (wonky) as it makes its yearly journey around the sun.

Why isn't winter warmer because the sun is closer.

It’s all about the angle of the tilt! It might seem like it should be colder when the Earth is farthest from the Sun, but the Earth is actually as close to the Sun as it gets when the northern half of the planet has winter!

Lunar eclipses.

They don't happen every month because the moons orbit is slightly inclined compared to the Earths orbit.



We have day and night because of the spin/rotation of the Earth.

Equinox- The time of year in which the sun crosses the celestial equator and day and night are of equal length.

Solstice- Happens twice a year. It is when the sun reaches its highest or lowest points in the sky at noon. These are the longest or shortest days of the year.