• Why the sky is blue?
• What we know and what we don’t?

Earth

We live on the planet earth, the planet is the third from the sun and it is the only terrestrial planet of the 3 planets after mercury to keep its ocean’s.

Why is the sky blue?

The sky is blue because of the composition of the atmosphere. When light bounces off nitrogen it makes the color blue that is why the sky is blue during the day and not blue during the night.

• What we know?
• What we don’t know?

We know a lot about the place that we call home but we also know very little about it at the same time. Did you know that we know more about the lunar surface then we do about our oceans on the earth? The moon was formed when the earth was still a ball of molten rock. The Earth was struck by a big rock about the size of mars and it made a lot of the rock to go into space which eventuality formed our moon. We also know that the moon is slowly moving away from the earth and in a billion year it will be it’s own planet. So long and read about Ceres.