Dark Energy
Hey everyone! I’m sure this is a super naive question.
My YouTube/Undergraduate (decades now ago 😂) physics knowledge lets me know Dark Energy is the force that is pushing far away things. Galaxies/things we see far away, further and further away, are getting faster/speeding up.
So my problem in understanding…this is light measured having been emitted many billions of years ago? Back when of course a giant event happened. Of course the further back you looked the faster things are going to look like. Of course the event was “pushing” things…the earlier you looked the faster it will be.
How do we know/assume that’s still happening?