by Massive objects curve light, enough so that they can distort the image of things behind them.
When researchers used the Hubble Space Telescope to spot a quasar from the early universe, they used it to estimate the universe's expansion rate and found that it is expanding faster today than it was back then — a finding that disagrees with other measurements.
Now physicists need to figure out if their theories are wrong or if something else strange is going on.
Source
When researchers used the Hubble Space Telescope to spot a quasar from the early universe, they used it to estimate the universe's expansion rate and found that it is expanding faster today than it was back then — a finding that disagrees with other measurements.
Now physicists need to figure out if their theories are wrong or if something else strange is going on.
Source
