You seem to like a nice series, so here’s a new one Fraser and Pamela have been thinking about. Over the course of the next 4 weeks, they’re going to cover each of the basic forces in the Universe. And this week, they’re going to start with gravity; the force you’re most familiar with. Gravity happens when masses attract one another, and we can calculate its effect with exquisite precision. But you might be surprised to know that scientists have no idea why gravity happens
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