After studying 30 years' worth of previous work, kepler became convinced that geometry and mathematics could explain the number, distance, and motion of the planets.

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Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

The ozone hole appears in antarctica during

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.