ASTR 1030 Lecture 1.1 - Science and the Universe

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Intro to Astronomy, How the Scientific Process works, and how scientists describe measurements

Last updated 6:08 PM on 8/25/26

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1

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What is astronomy?

The scientific study of celestial bodies and the universe

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What is a hypothesis?

A tentative scientific model that is still being tested.

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What is a light-year?

The distance that light travels over a year.

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What is a light second?

How fast light travels in a second (300,000,000 m/s)

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What is Scientific Notation?

The system that scientists use to write out large numbers without taking up time and space to write out a bunch of zeros.

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What defines the universe?

Everything that exists that we can observe