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•Ara•Norma•Sagittarius•Corona AustralisAQuestion 8: Does the gamma ray hot spot appear to lie in the direction of the center of the Milky Way?Question 1: What features of spiral galaxies are evident in this view of the Milky Way?Question 2: What is common to the appearance of these visibly different spiral galaxies?Student Exercises >> G: Galaxies and the Universe >> G2: Galaxy Classification >> 2: Elliptical GalaxiesBQuestion 3: How does this elliptical galaxy differ in appearance from a spiral galaxy?•It has a bright central core.•It has an indistinct outer boundary.•It has a central bulge and dust lanes.•There are no visible spiral arms.Student Exercises >> G: Galaxies and the Universe >> G2: Galaxy Classification >> 3: Lenticular GalaxiesAQuestion 4: What is the most striking visual feature of this lenticular galaxy?•It is shaped like a spiral but has no spiral arms.•It has very distinct spiral arms but no central bulge.•It has large and obvious dust lanes.•It is one member of a merging pair of galaxies.Question 5: Based on its appearance, what type of galaxy is the LMC?•Elliptical•Lenticular
•Spiral•IrregularStudent Exercises >> G: Galaxies and the Universe >> G2: Galaxy Classification >> 5: Hubble’s Galaxy Classification SchemeBQuestion 6: Using the diagram for reference, what type of galaxy is NGC1317?Question 1: The Andromeda Galaxy is the most distant celestial object that can be seen with the unaided eye. About how far away from the Milky Way is the Andromeda Galaxy?Student Exercises >> G: Galaxies and the Universe >> G3: Redshift and the Expansion of the Universe >> 2. Distant GalaxiesAQuestion 2: Use Hubble’s Law to calculate the recessional velocity of the Virgo cluster ofgalaxies. How fast are these galaxies receding away from us?