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Lecture

AST101H5 Solar System Astronomy (5TH)

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Department
Astronomy
Course
AST101H5
Professor
John Lester
Semester
Fall

Description
when do we observe the moon to have its smallest angular phase? full ohase farthest from earth (smaller the angle, the further away) new phase close to eath firat quater phase Apparent rising and setting earth is doing this  where does the sun rise? appear to rise form west and set in west spin east makes everything appear that way suns rising /.setting solar time s0lar day= 24 hrs merdian­north to south overhead, divides the sky into eastern and western side, sun is on  meridian at noon may us meridian for star, star time (sidereal time)  after a day it takes 361degrees to go back  horizon­boreder btw sky and earth, may not always be seen seasons not cause by distance to sun earth is closets to sun jnuary sun's angular size is largest earth is farthest firn the sun in july­ su's angular size is smallest summer in toronto=winter in asutralia and in south america earth's spin is tilted by 23.5 degrees to it orbital moon has 2 effets] titlt affects concentration of sun on the earth only when titled toward the sun sunlight is spread  number of hours of daylight when the titlt is more toward the sun, th sun is above the horizon for less than 1o2 hours when titl
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