p2h big bang
TRANSCRIPT
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P2h The Big Bang
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Our Universe
What it is like, how it started, how it evolved to its current state, and
how it will end
Today we will talk about:
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First, let’s look at some of the objects we might find if we explored our Universe
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Where do we live?
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Where is the Earth?
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The Solar System
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Q: What is a STAR?
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Our Sun is a star!
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What is this?
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What is it made of?
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MANY STARS
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MANY STARS
SOME SUN-LIKE
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You are here!
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Our Galaxy from the Earth
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Galaxies: Hubble Space telescope image
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‘Zoom out’ - galaxies form filaments and voids
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IN THE BEGINNING…….
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EVERYTHING!
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EVERYTHING!
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EVERYTHING!
ENERGY INCREASING, BECOMING LIKE A BOMB…….
STARTS EXPANDING…..
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Tick tick tick……
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BOOM!
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COSMIC ‘SOUP’
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PROTONNEUTRON
ELECTRON
COSMIC ‘SOUP’
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• Universe much cooler, atoms start to form…..
• Hydrogen, Helium, normal ‘stuff’
300,000 Years Later…..
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Universe is now a GAS
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Universe is now a GAS
HYDROGEN
HELIUM
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GRAVITY!
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QuickTime™ and aYUV420 codec decompressor
are needed to see this picture.
Gravitational Collapse
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Gravitational Collapse
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If we could view the Universe from outside, if would look like this:
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But we are inside one of these galaxies, so all we see are the nearby stars. We can see other galaxies if we use a telescope
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The Gemini Telescope
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What have we learnt?
• The Universe started with a BIG BANG
• Gradually the particles were drawn together under GRAVITY to form STARS and GALAXIES
• Many stars have planets around them
• The fate of the Universe is uncertain…
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Big Bang - Tasks
Discuss & do in Pairs
1. Design a time-line of events since the Big Bang
2. What evidence is there to support the Big Bang theory?
3. Decide on 2 non-fact-based questions to ask the rest of the class on this topic
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Research and Discussion Points
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Research and Discussion Points
• What was there before the Big Bang?
• What caused the Big Bang?
• How big is the Universe?
• Will the Universe keep expanding?
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THE END?