Page 43 - Curriculum Visions Dynamic Book
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Type 1: Irregular galaxies
Irregular galaxy (NGC1705).
astronomy The study of space beyond the Earth and its contents.
cosmological principle States that the way you see the Universe is independent of the place where you are (your location). In effect, it means that the Universe is roughly uniform throughout.
cosmos The Universe and everything in it. The word “cosmos” suggests that the Universe operates according to orderly principles.
gravity The force of attraction between bodies. nebUla (pl. nebUlae) Clouds of gas and dust
that exist in the space between stars.
Type 3: Spiral galaxies
Subtype: Normal spiral galaxies
Normal spiral (NGC 4622).
Type 2: Elliptical galaxies
(NGC 4261).
Type 3: Spiral galaxies
Subtype: Barred spiral galaxies
Barred spiral (NGC 2787).
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