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In this video, we look at what is meant by red-shift and how this supports the Big Bang theory. We then look at how the expansion of the universe is accelerating.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Physics. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits: [ Ссылка ]
Ernest Rutherford
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Ernest Marsden
S P Andrew Ltd (1921)
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Milky way
Steve Jurvetson
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Hooker telescope "[ Ссылка ]
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Red shift spectra (cropped and original)
Georg Wiora
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Earth
NASA / Apollo 17
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M81
Ken Crawford
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Andromeda
Adam Evans
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Hoag's Objects
NASA and The Hubble Heritage Team (STScI/AURA); Acknowledgment: Ray A. Lucas (STScI/AURA)
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SN1994D
NASA/ESA, The Hubble Key Project Team and The High-Z Supernova Search Team
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Music credit: Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence ([ Ссылка ])
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Artist: [ Ссылка ]
