'Spiral nebula' diaporamas de présentation

Galaxies

Galaxies. How big is the Universe? Types of galaxies Elliptical Spiral Irregular. What evidence do we have that there is hidden mass in the galaxy?. cool clouds of hydrogen RR Lyrae variable stars in globular clusters flat rotation curve at large radii dusty regions in the plane.

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Announcements

Announcements. Observing for third exam starts today. Galaxies. How big is the Universe? Types of galaxies Elliptical Spiral Irregular Groups of galaxies. How big is the Universe?. Spiral nebulae were identified not long after development of the telescope around 1600

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A Spiral Nebula as a Stellar System, Messier 31

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