Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are...
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Transcript of Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are...
![Page 1: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/1.jpg)
Comets, Meteors
and Asteroids
![Page 2: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/2.jpg)
Astronomical Units (AU) and Light-Years (ly)
(AU and light years are both measurements of distance, generally used to show large amounts of distance between points. Light-years are better suited for calculating the vast distances between stars and galaxies, while AUs are better suited for calculating distance inside the (relatively) smaller space of a solar system
![Page 3: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/3.jpg)
What is the composition of an
asteroids? Asteroids are made of rocks and metals.
Where did they come from?
Asteroids are left over from the formation of the solar system.
![Page 4: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/4.jpg)
Asteroids•Where are asteroids located?
Asteroids are located in the “Asteroid Belt” between orbits of Mars & Jupiter
Some asteroids may beKnocked outside the Asteroid Belt by colliding with other asteroids.
![Page 5: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/5.jpg)
Comets
Where do they come from?ORIGIN:
Left over from formation of solar system
![Page 6: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/6.jpg)
•Size of Comets
•About the size of a mountain (without the tail)
•Tails can be ≥ 100 million km
![Page 7: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/7.jpg)
•Ice
•Dust
•Small rocky particles
Composition of Comets
![Page 8: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/8.jpg)
Parts of a Comets:
•Nucleus – solid inner core
•Tail – gas & dust can been seen as the sun heats the comet & blows it away from the sun
![Page 9: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/9.jpg)
Comet’s tail ALWAYS points away from the sun.
![Page 10: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/10.jpg)
Comets orbit in long, narrow, elliptical paths around the Sun.
http://www.youtube.com/watch?v=LwMXms7OsSQClick link below for animation
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Where do meteors come from?
•Broken pieces of comets or asteroids!
![Page 12: Comets, Meteors and Asteroids. Astronomical Units (AU) and Light-Years (ly) ( AU and light years are both measurements of distance, generally used to.](https://reader036.fdocuments.us/reader036/viewer/2022081519/56649e975503460f94b9aa4f/html5/thumbnails/12.jpg)
Composition of Meteors
What are meteors made of?
Rock & dust
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Size of meteors
Smaller than comets or asteroids (since they come from broken pieces of these!)The Perseid
Meteor Shower (happens every August) which has been observed for 2000 years!
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