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Time for Crazy Glasses and Prisms!!

Do Now:

What do you see and why?

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The universe started as a single point.

That point was extremely dense.

It became unstable and exploded outward.

Today the universe continues to expand.

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Time for Crazy Glasses and Prisms!!

Do Now:

What do you see and why?

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Evidence for the Big Bang:

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Electromagnetic Spectrum – humans can only see one part of spectrum – visible light

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What is the best inference that can be made concerning the movements of Galaxies A, B, and C?

Regents Q:

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Put these in order of size:

galaxy solar system universe

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universe

galaxy

solar system

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Raisin bread analogy of an expanding universe

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JUST FOR FUN

Validity of the following slides is unknown?

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But it is still cool to imagine the sizes of things in space …

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Terrestrial Planets – Earth largest solid, smaller, denser

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Earth compared to Jovian Planets�gaseous, large, low density

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All planets compared to Our Sun

No longer considered a planet

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Galaxies far, far away ….

  • Come in different shapes and sizes

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Our Milky Way Galaxy

Is a spiral disc,

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wide but flat.

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Earth and the entire solar

system is just one speck

on an arm of our galaxy.

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The sombrero galaxy��The dimensions of the galaxy, officially called M104,�are as spectacular as its appearance.�It has 800 billion suns and is 50,000 light years across. 

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Galaxies collide

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  • The “eyes” from 114 million light years away are the swirling cores of two merging galaxies called

NGC 2207 and IC 2163 in the distant Canis Major constellation.

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In our expanding universe

  • Most objects are seen moving away from us and from each other

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15 billion

Years old

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So what are the chances that we are not alone??