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33 Cards in this Set

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Nearby stars and planetary systems
Stellar region
describe an open cluster
younger stars

also called galactic

10-2000 stars

moslty in disk

random asymmetias bundle

ex: Pleides
Symbol for an irregular or peculiar galaxy
Irr
Several galaxy clusters and voids
Super Cluster
Thought to be location of oldest stars
Halo
Three major classifications of galaxies
Elliptical, Spiral, & Irregular
Describe a globular cluster
older stars

more dense

100's in the bulge or halo

helps determine the age of the galaxy

high spherical bundle
Possible explanations for irregular / peculiar galaxies
possibly a result of collisions between galaxies or an odd or angled view.
A group of planets orbiting a star
ex. (Solar,System)
Planetary System
Three considerations for classifying galaxies
Earth's perspective

Shape-disk? Bulge? Arms? Stretched?

Activity- Black holes? Quasars? Collisions?
Collection of stellar regions orbiting a central point
Galaxy
A grouping of galaxies can be up to 1,000 galaxies
Galaxy Cluster
Symbol for a tightly wound sprial galaxy
Sa
Symbol for a round elliptical galaxy
Eo
Another name for an open cluster
galactic
Area of galaxy with younger stars
open
Area of galxy with older stars
globular
"red" cluster
globular
Symbol for a flat elliptical galaxy
E5
Cluster with older stars
globular
Name of our galaxy
Milky Way
Inner region of stars
Bulge
Outer region of stars
Disk
"equator" of the galaxy ("middle")
Galactic Plane
Example of an open cluster
Pleides
Name of our planet
Earth
Name of our planetary system
Solar System
Name of our stellar region
Stellar Neighborhood
Name of our Super Cluster
Local Cluster
Name of our galaxy cluster
Local Group
Larger Cluster
Open
Symbol for a barred spiral galaxy
Sb
All space, time, matter, & energy
Universe