Lecture 1 layers

ASTRONOMY Dr. Mickey Kutzner Andrews University Griggs University/ Andrews University Presents:

The heavens declare the glory of God; and the firmament sheweth His handiwork. Psalm 19:1

Powers of Ten ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://powersoften.com/

Distances & Speed 1 astronomical unit = 1 AU = 1.5 x 10 8 km Speed of Light=c = 300,000 km/s = 300,000,000 m/s = 3x10 8 m/s 1 Light Year = the distance light travels in 1 year = (3x10 8 m/s) x (3.14x10 7 s/year) ≈ 10 16 m = 10 trillion km

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Nucleus Electrons ATOM ATOMS Atoms are held together by the electrical attraction between protons (+) and electrons (-).

Four Forces of Nature ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Increasing strength

Scientific Method ,[object Object],Possible explanation Experimental feedback how nature always behaves OBSERVATION HYPOTHESIS THEORY (model) TESTING LAW

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