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Astronomy, General Astronomy
Year 1
Why do astronomers infer that the Sun's energy comes from nuclear fusion reactions...
c. Why do astronomers infer that the Sun's energy comes from nuclear fusion reactions? How do we know it does not come from chemical burning?
d. Explain how the Sun produces energy by nuclear fusion.
e. When we look at stars in the sky we see a wide range of brightness. Explain the factors that would make one star appear brighter than another.
(Please explain in your own words, if possible)
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Light is one form of electromagnetic radiation... - a. Light is one form of electromagnetic radiation. What are electromagnetic waves and what other types are there besides light? Compare their wavelengths.
b. How can the temperature, composition, and motion of an object be determined from its light spectrum?
(Please explain in simple terms, if possible)
Discussion questions - n. Evidence is strong that the formation of the Sun (and its family of planets) happened by the same processes as the formation of stars. Explain.
o. How are planets detected around other stars?
p. Did the Sun and solar system form in the first half or last half of our galaxy's history? Explain.
(Please reply in your own words, if possible)
General Astronomy Questions - r. How many years would a radio signal take to reach the nearest large galaxy to us, the Andromeda galaxy? (Hint: Consider the nature of all electromagnetic waves.)
s. Why is the study of the most distant galaxies we can see related to the study of conditions around the time that our galaxy (and perhaps others) was forming?
t. What observati...
What would an imaginary terrestrial observer see as the Sun runs out of hydrogen in the future? If life is confined to Earth when this happens, would life perish from heat or from cold? - What would an imaginary terrestrial observer see as the Sun runs out of hydrogen in the future? If life is confined to Earth when this happens, would life perish from heat or from cold? Explain.
What kind ...
Compare the stars found in the galactic disk - Compare the stars found in the galactic disk (where the sun is located), also known as Population I stars, with the stars in the halo of our galaxy, known as Population II stars.
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