Most people think they know exactly where “down” is. It’s the direction your feet point. But that familiar sense of orientation starts to unravel when viewed from space. What happens to “down” when ...
However, Polaris was not always the pole star. In 3942 BCE, the star Thuban, in the constellation of Draco – the Dragon, was ...
If you’ve seen illustrations or models of the solar system, maybe you noticed that all the planets orbit the Sun in more or less the same plane, traveling in the same direction. But what is above and ...
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