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What are the two primary elements in the Sun\’s composition?
The red-shift observed in light from remote galaxies supports which concepts? (You may select more than one answer)
What sequence best describes the development stages of a star similar in mass to our Sun?
What is the significance of the value 2.2 × 10⁻¹⁸ s⁻¹?
In which segment of the electromagnetic spectrum does the majority of the Sun\’s energy output occur?
How should redshift be properly explained?
How long would it take for light to traverse from the core to the rim of the Milky Way?
What is the distance that light travels within one year?
Considering the average orbital radius of Uranus is 4,500 million km, how much time does sunlight take to reach it?
When it comes to measuring galactic velocities and distances, which methods are used?
What can be derived from the formula Hubble introduced, H₀ = v/d? (You can select more than one answer)
Given that the Andromeda galaxy is positioned 2.5 million light-years from our planet, how rapid is its movement away from Earth?