Like the Earth, half of the Moon faces towards the Sun, and half faces away from it. As the Moon orbits the Earth, we see it from different angles. We see different amounts of the lit and dark ...

Earth’s orbit around the Sun is not circular, but an ellipse. The perimeter of Earth’s orbit is roughly 584 million miles ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once ...

The movements of the planets in the Solar System are pretty difficult to get your head around, even before we get started on ...

However, the number of total orbits varies greatly among the other planets because their years are either shorter or longer ...

Earth orbits the sun once every 365.25 days. Since our calendar years have only 365 days, we add an extra leap day every four years to account for the difference. Though we can't feel it ...