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Astronomy 1021 Study Guide - Fall 2018, Comprehensive Midterm Notes - Sun, Earth, Orbit


Department
Astronomy
Course Code
ASTR 1021
Professor
Robert Cockcroft
Study Guide
Midterm

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Astronomy 1021
MIDTERM EXAM
STUDY GUIDE
Fall 2018

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Introduction to Astronomy
Midterm in November and February, no exam in December but there is a final exam in April.
NEED ABOVE 50% IN THE CLASS AND AT LEAST 50% ON EXAM
No make ups for assignments
Mastering astronomy assignment
Course ID MACOCKCROFTS001EVENING
Due Monday’s before midnight
In class Participation www.learningcatalytics.com
Read textbook before class
Cygnus= Swan (Latin)
Flies across the milky way
Beta Cygni: Albireo
Alpha Cygni: Deneb
Cygnus X-1
Kepler Space Telescope
Flying across the band of the Milky Way
Terms
Star- A spherical object that generates energy though nuclear fusion (ex. H -> He)
Sun is the closest star
Next closet is Proxima Centauri
1000s stars visible in the sky
Lots of varieties (Chapters 11-14)
Stars twinkle
Planet- A spherical object that orbits a star: dominates its orbit; reflects light; rock; ice; gas
Eight in our Solar System
Three Definitions (must orbit the sun, must be sphere, must clear its own orbit; 2006)
1000s exoplanets
Moon (aka satellite)- An object that orbits a planet
Moon vs moon (capitalized means our moon)
Moons also know as satellites
Natural vs Artificial
Find out when you can see the ISS: https://spotthestation.nasa.gov/
Solar System- The region around a star that includes planets, moons
Solar System vs solar system
May contain multiple stars
Most likely will contain multiple planets
W1L$Introduction
Thursday,* December* 14,*2017
11:59*PM
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Most likely will contain multiple planets
Other small bodies
Galaxy- Very big collections of stars (and solar systems), gas, dust, and dark matter (chapter 18)
Galaxy vs. galaxy
Our Galaxy is the Milky Way Galaxy (chapter 19)
Andromeda Galaxy (M31)
View of our MW from within
Different types (chapter 20)
Nebula (Cloud)- The interstellar clouds of gas and dust; four main views
Nebula
Four main types of nebulae (chapter 14)
Universe- The entirely of everything we know of; time pace and all its contents
Hubble Deep field Image
Most of the ‘blobs’ are distant galaxies
Do order-of-magnitude estimates using scientific notation; define
Million
Billion
Trillion
Order of Magnitude Estimates
Earths Average distance from the sun= 1.5 x 10^8 defined to be 1 AU
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