Cosmology – Flashcard
Flashcard maker : Kolby Cobb
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What is cosmology?
answer
A science that explains about the universe’s birth and development.
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True or false – Is the universe expanding overtime?
answer
True
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Does the universe has an edge or a center?
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No; according to the cosmological principle, the universe has no center nor edge.
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The farther the galaxy, ……..
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The farther we look back in time (distant galaxies are much younger than nearby galaxies)
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How can we find the age of the universe with distant galaxies?
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Lookback time – The amount of time since the light we see from distant objects.
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True or false – The universe expanding into something.
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False
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In the beginning of the universe, helium and hydrogen filled the space almost __________
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Uniformly
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The densest area, with much matter, becomes the
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“seeds” of galaxies
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in the first step of galaxy’s formation, the cloud expands along with the universe, however it stopped by __________.
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Gravity
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Gravity contracts clouds into ___________, which helps form galaxies.
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Protogalactic clouds
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Where do protogalactic clouds form?
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Densest regions of the universe
