bottom-up scenario | has definition A galaxy-formation scenario in which small galaxies form first. Larger and larger structures are then formed in due course. | |
has definition The idea that small structures, perhaps galaxies or even smaller substructures, form first in the universe, followed later by larger structures. | |
is a kind of galaxy theory | |
galaxy theory | has domain extragalactic astronomy | |
theory | has validity correct or incorrect with caveats | |
has author or reasearch group | |
has date or a range of dates for which the theory was active | |