As the earth spins on its axis, producing night and day, it also moves about the sun in an elliptical (elongated circle) orbit that requires about 365 1/4 days to complete. The earth's spin axis is ...

The Earth orbits the Sun once every year, but it doesn’t spin upright. Instead, it’s tilted on its axis by about 23.5 degrees. This tilt is the reason we have seasons. As the Earth moves around the ...

Right now, you’re zooming through space at incredible speeds. As just one of all the living creatures on Earth, you’re along for the ride as our planet constantly moves in two major ways. First, ...

As just one of all the living creatures on Earth, you're along for the ride as our planet constantly moves in two major ways. This article was originally published at The Conversation. The publication ...