Origins of the Universe

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What is Red-Shift?
The displacement of spectral lines towards longer wavelengths (the red end of the spectrum) in radiation from distant galaxies
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What does Red-Shift provide evidence for?
The Universe is expanding.
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What is CMB radiation?
Cosmic microaves background radiation; the idea that low frequency EM radiation (microwaves) are coming from all parts of the universe.
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What do CMB radiation provide evidence for?
The Big Bang Theory as the universe expands and cools, the background radiation cools and drops in frequency.
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What is the Big Bang Theory?
The idea that all energy and matter was compressed into a very small space and then\ suddenly exploded, and continued expanding.
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What is the Steady State Theory?
The theory that the Universe has always existed as it does now and it always will.
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What does the Steady State Theory explain?
The expansion and redshift by suggesting that matter is being created in the spaces as the Universe expands.
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What does Red-Shift suggest?
That all galaxies are moving away from us very quickly. More distant galaxies have greater Red-Shift because they're moving faster.
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Other cards in this set

Card 2

Front

What does Red-Shift provide evidence for?

Back

The Universe is expanding.

Card 3

Front

What is CMB radiation?

Back

Preview of the front of card 3

Card 4

Front

What do CMB radiation provide evidence for?

Back

Preview of the front of card 4

Card 5

Front

What is the Big Bang Theory?

Back

Preview of the front of card 5
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