1.   http://www.youtube.com/watch?v=b0lxbzgwW7I http://www.youtube.com/watch?v=b0lxbzgwW7I Scale of the Universe

2.  1.You will be given a tab for an object in our universe. 2.Think about the size of your object and align yourself with your classmates in the back of the room 3.Smallest object should be closest to the Astronomy bulletin board. Largest objects should be closest to the sinks. Instructions for Scale of the Universe activity:

3.  1.Proton 2.Oxygen nucleus 3.Oxygen atom 4.Red blood cell 5.Eyelash 6.Pupil of your eye 7.Arm’s reach 8.Ferris wheel 9.Meteor crater in AZ 10.Hudson bay 11.Our moon 12.Mars 13.Earth 14.Jupiter 15.Moon’s orbit 16.Sun 17.Earth’s orbit 18.Solar system 19.Kuiper belt 20.Oort cloud 21.Our star neighborhood 22.Milky way galaxy 23.Our local group of galaxies 24.Virgo Super cluster 25.Observable universe Answers to the correct order

4.  Questions  Were there any sizes you were unsure of?  Did you have a good idea of where everything fit in?  Was there anything you heard that made you think “I want to learn more about that?”

5.  1An atom has a small, dense nucleus composed of neutrons and protons. 2Our Sun’s diameter (1,380,000 km) is roughly 1.8 times longer than our moon’s orbit diameter. 3 All Oort Cloud objects, from planets in our solar system to far-out comets, are bound by gravity to our massive sun/star. 4 On a clear dark night, we can see a few thousand star/suns in our immediate “neighborhood” with the naked eye. 5Our star “neighborhood” spirals with billions of other stars in our home Milky Way galaxy. 6 Our Milky Way circles with numerous neighboring galaxies to form a Local Group. 7Our Local Group rotates near the outer edge of many other groups of galaxies with the Virgo Group near its center. This huge, gravitationally bound “group of galaxy groups” is called the Virgo Supercluster. 8The Virgo Supercluster floats like a dust mote among 100 billion other galaxies that comprise the observable universe. Some explanation

6.   Find out the size of your object. Try to find out both the diameter and circumference of your object. If it is not spherical imagine a sphere around it and report back next class. Homework

7. http://scaleofuniverse.com/ http://apod.nasa.gov/apod/ap120312.html http://www.youtube.com/watch?v=17jymDn 0W6U http://www.youtube.com/watch?v=17jymDn 0W6U

8.   http://www.youtube.com/watch?v=VJpC_oQQxPI http://www.youtube.com/watch?v=VJpC_oQQxPI  This is a five minute large-scale structure of the Universe shown in 3 different scientific observation projects:  Sloan (Digital Sky Survey), Millenium (3D model of the universe) and Filaments grown process simulation. Large scale structure of the universe