Term
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Definition
Around 30% in the universe.
Large diameters of 20,000 to 125,000 lightyears wide. Have young and old stars. |
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Term
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Definition
| Around 60% in universe. Shape from round to oval. Have mostly older stars. |
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Term
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Definition
Around 10% in the universe.
Have a lot of different shapes that are classified as irregular. Contain younger stars and are very hot. |
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Term
| Hubble Classification Scheme |
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Definition
The telescope led to discovery of galaxies and many differences.
In 1926, Hubble classified galaxies by shape and defined them in the Hubble Classification Scheme |
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Term
| Galaxy Classification Systems |
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Definition
| 3 main types: Elliptical, Spiral, and Irregular. |
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Term
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Definition
| System of galaxies containing several thousand member galaxies. Milky Way galaxy is member of Local Group in the Virgo Supercluster. |
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Term
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Definition
Farther Away= Red Shift. The greater amount of red= Faster Receding.
This redshift shows that the universe is expanding. |
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Term
| What is star color related to? |
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Definition
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Term
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Definition
| Around 35,000 degrees Celsius. |
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Term
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Definition
| Amount of energy at all wavelengths given off by a star into space each second. |
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Term
| Can luminosity be measured? |
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Definition
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Term
| What 3 factors control the apparent brightness of a star? |
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Definition
| 1. Size of the Star. 2. Temp. of the star. 3. Distance of the star |
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Term
| What is apparent magnitudes abbreviation? |
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Definition
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Term
| what is absolute magnitude's abbreviation? |
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Definition
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Term
| How do you calculate magnitude? |
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Definition
| 1. Take difference in Mags. 2. Raise 2.512 to that power. |
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Term
| If two stars appear to be equally bright but you know one is more distant? |
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Definition
| The more distant one must be brighter. |
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Term
| If two equally bright stars are visualized but one is brighter? |
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Definition
| The brighter star must be closer to earth |
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Term
| How does the suns spin affect the Magnetic Field? |
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Definition
| It spins irregularly cause the Magnetic Field to tear. |
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Term
| What element is most common in the Universe? |
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Definition
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Term
| Which element is the second most common in the universe |
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Definition
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