NOGalaxy evolution and star evolution follow a similar course. True or False?
I'm sure you could make arguments either way. Galaxies are made up of stars and so you could say they evolve like them. They eventually use up their gas clouds in star formation like stars all eventually use up their hydrogen. That's a weak comparison, however. Galaxies evolve mostly through interactions with other galaxies. Galaxy collisions generally result in turning spiral galaxies into elliptical ones, causing a starburst period that uses up all the galaxy's gas, converting it into stars. The farther we look into space, the farther back in time we are seeing. There appears to be a much higher population of elliptical galaxies in the present than there was in the past.Galaxy evolution and star evolution follow a similar course. True or False?
Not really. Galaxy evolution is driven in part by galaxy collisions. Collisions are unimportant to stellar evolution.
True. Physics applies at all levels and always works the same except for the Heisenberg uncertainly principle.
True. On a particle level.
False
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment