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10 top equations in astronomy

Astronomers use math every day, and these 10 equations are some of their favorite tools.
RELATED TOPICS: EQUATIONS
Math is the engine of the universe, driving and dictating all actions, interactions, transformations, and appearances, including yours. Equation-based laws underlie physical systems, and the physical systems astronomers care about are ones composed of stars, planets, galaxies, gases, plasma, strange subatomic particles, dark matter, dark energy, and anything else you might find if you ventured to space. Although all equations are beloved and have their own fan bases, some equations are more fundamental and wide-reaching than others.

But let’s all be honest with each other: It’s not for me to say which 10 formulas are the top 10. So these are 10 of the top equations, in no particular order. And I don’t think you could find a scientist would argue that these don’t deserve applause for their role in the history of astronomy as well as in its future.
Bob Berman described the law of gravitation in his article, but it bears repeating. This law of Isaac Newton’s states that anything with mass attracts any other thing with mass. The closer the two objects are together, the more attraction they feel (a phenomenon with which you may be familiar). No matter how far apart they become, the attraction never completely disappears.
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