Types of Galaxies Spiral Elliptical Irregular.

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Presentation transcript:

Types of Galaxies Spiral Elliptical Irregular

Spiral Galaxies

Spiral Galaxies Huge; contain stars, gas, and dust

Spiral Galaxies Held together by gravity

Spiral Galaxies Pinwheel shape (top view on graphic organizer)

Spiral Galaxies Have a bulge and thin disk; halo is present

Spiral Galaxies Rich in gas and dust

Spiral Galaxies Young and old stars are present

Elliptical Galaxies

Elliptical Galaxies Huge; contain stars, gas, and dust

Elliptical Galaxies Held together by gravity

Elliptical Galaxies Round to oval shape

Elliptical Galaxies Have a huge bulge, but no disk; halo is present

Elliptical Galaxies Little cool gas and dust

Elliptical Galaxies Mainly old stars are present

Irregular Galaxies

Irregular Galaxies Huge; contain stars, gas, and dust

Irregular Galaxies Held together by gravity

Irregular Galaxies No regular shape

Irregular Galaxies May show signs of a disk and/or a bulge; halo is present I

Irregular Galaxies Usually rich in gas and dust

Irregular Galaxies Young and old stars are present

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