Why should I stop talking about the Earth-moon-Sun system? There really is no reason. So, let me continue the discussion with a short tutorial that goes through the steps to make this model. There isn ...

Up here on the International Space Station I don’t get affected by the seasons but on Earth the seasons are always changing: Spring, Summer, Autumn and Winter. What causes the seasons to change? Let’s ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once a year, and it rotates on its axis about once a day (depending on your ...