Which factor is essential to the initial formation of galaxies, for either of the theories describing galaxy evolution?(1 point) Responses Gravity acts on existing material, shaping it into a new form. Gravity acts on existing material, shaping it into a new form. Massive gas and dust clouds collapse. Massive gas and dust clouds collapse. Small lumps of material merge into larger clumps. Small lumps of material merge into larger clumps. The force of orbiting stars generates collisions. The force of orbiting stars generates collisions.
5 answers
Massive gas and dust clouds collapse.
Which characteristics are considered most typical of an old galaxy in decline?(1 point) Responses shrinking in size, high dust content shrinking in size, high dust content very bright, relatively small very bright, relatively small spiral, abundant planets present spiral, abundant planets present low gas content, little star formation
shrinking in size, high dust content low gas content, little star formation
With which type of galaxy is a small galaxy most likely to merge? Select the two correct answers.(1 point) Responses a nearby galaxy a nearby galaxy a much larger galaxy a much larger galaxy a fast-moving galaxy a fast-moving galaxy an equal-sized galaxy
a nearby galaxy a much larger galaxy