Of the four fundamental interactions, gravitation is the dominant at astronomical length scales. Gravity effects are cumulative; by contrast, the...

By astronomical convention, the four seasons can be determined by the solstices—the points in the orbit of maximum axial tilt...

Cream skimmed from milk may be called "sweet cream" to distinguish it from cream skimmed from whey, a by-product of...

There are a number of different theories and hypotheses regarding early state formation that seek generalizations to explain why the...

Of the four fundamental interactions, gravitation is the dominant at astronomical length scales. Gravity effects are cumulative; by contrast, the...

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