The Universe

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What is the Big Bang theory?

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The Big Bang theory is the leading explanation for the origin of the universe, suggesting it began as a singular point and has been expanding ever since.

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Front

What is one major piece of evidence supporting the Big Bang theory?

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Astronomers have detected leftover radiation from the Big Bang, known as Cosmic Microwave Background Radiation.

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Front

What does the Cosmic Microwave Background Radiation represent?

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It represents the thermal radiation filling the universe, a remnant from the early stages of the Big Bang.

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Front

What is red shift in astronomy?

Back

Red shift refers to the phenomenon where light from distant galaxies is shifted towards longer wavelengths, indicating that those galaxies are moving away from us.

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Front

What does the red shift of galaxies indicate about the universe?

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It indicates that the universe is expanding, as more distant galaxies show greater red shifts.

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What is light element abundance?

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Light element abundance refers to the relative amounts of hydrogen, helium, and lithium in the universe, which supports the Big Bang theory.

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Front

What is the significance of the discovery of the Cosmic Microwave Background Radiation?

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It provides strong evidence for the Big Bang theory, confirming that the universe was once in a hot, dense state.

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What does the term 'expanding universe' mean?

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It means that galaxies are moving away from each other, suggesting that the universe is growing larger over time.

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Front

What is the difference between red shift and blue shift?

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Red shift indicates an object is moving away, while blue shift indicates an object is moving closer.

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What is the role of telescopes in studying the universe?

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Telescopes allow astronomers to observe distant celestial objects, helping to gather evidence for theories like the Big Bang.

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