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20 Cards in this Set
- Front
- Back
The |
Explains the shift of spectra due to the |
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Which large optical telescope |
D. The ESO Extremely Large Telescope
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What does the term “Milky |
B. A band of light in the night sky
C. A galaxy of billions of stars that |
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Are flashlights and headlamps |
no |
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Two stars are at the same |
Yes |
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property of a globular cluster (3) |
A. Masses up to millions of solar masses |
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What evidence suggests that |
B. Existence of strong dust absorption in |
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Why do some galaxies have |
A. rotation of Milky Way D. Some galaxies are falling together |
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Which of the following argues |
B. Lots of novae like in the Milky Way |
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What is the velocity of a |
7300 km/s |
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Dark matter is mostly |
Exotic particles |
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What is the cosmological |
The expansion of space with a little Doppler shift of galaxies |
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A wave of light is emitted by a distant galaxy. |
Half the present size |
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evolution of the Universe |
Temperature getting cooler with time & density decreasing with time |
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Why is the density of the |
Universe is expanding |
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Why were there no nuclear reactions in |
There were reactions – it’s just that energetic |
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Where does iron come from? |
Exploding stars |
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The big bang radiation currently has a |
1 mm |
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Two stars the same size: one has a |
81x as much |
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observational evidence of a hot dense |
Abundance of Helium atoms Microwave background looks the same |