expand (the universe)
The Spanish phrase 'expandirse (el universo)' translates to 'expand (the universe)' in English. It is used in the context of explaining phenomena in physics and cosmology. 'Expandirse' is a reflexive verb, indicating a process or change happening to the subject itself, in this case, the universe. It's derived from 'expandir' which means to expand or to spread. 'El universo' refers to 'the universe'. Combined, 'expandirse (el universo)' is used to describe the action of the universe expanding.
The universe continues to expand at an incredible rate.
This sentence is stating a fact about how the universe is still expanding rapidly. It uses the gerund form of 'expandirse' to indicate that this action is ongoing.
Scientists believe that the universe started to expand after the Big Bang.
This sentence refers to the widely accepted theory that the universe's expansion began immediately after the Big Bang. 'Empezó a expandirse' is the past tense, indicating that this action initiated in the past.
It is predicted that the universe will expand indefinitely.
This sentence talks about a prediction regarding the future status of the universe. Using 'va a expandirse', it tells us that a future action is expected, in this case, the indefinite expansion of the universe.