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16 Cards in this Set
- Front
- Back
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Huge collections of stars, and nebulas held together by gravity
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galaxy
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four types of galaxies: E S SB I
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A) Elliptical
B) Spiral C) Spiral Barred D) Irregular |
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what is in the center of a galaxy
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black hole
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Describe Spiral Galaxy: 3 things
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1)black hole
2)halo around black hole 3) spirally arms |
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what makes a galaxy have spiral arms and keeps them from getting tangled
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local distortions of GRAVITY
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Describe Barred spiral Galaxy
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more squished long c..like spiral but has few arms
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which galaxy is earth located
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milky way
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what type galaxy is milky way
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barred spiral galaxy
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earth is on a spiral arm iin the Milky way. what is the arm called
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Orions arm
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type galaxy has the most population 2 stars
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ELIPTICAL GALAXIES
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describe elliptical galaxy
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once thought youngest systems but notanymore
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why do scientist think elliptical galaxies are older now
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amount of population 2 stars
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shape of elliptical galaxy
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sphere or egg shaped
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causes irregular galaxies
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WHEN TWO OR MORE GALAXIES COLLIDE WITH EACH OTHER
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does PHYSICAL CONTACT (collisions)BETWEEN STARS happen often
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very rare
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when one star system eats another system
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CANNABALIZE
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