Edwin Hubble

Feb 8, 2024 | daily.jstor.org | Don Lincoln |Edwin Hubble |Adam G. Riess |Mario Livio

The icon indicates free access to the linked research on JSTOR. Astronomers have known for nearly a century that our Universe is expanding. For decades, scientists expected this expansion to be slowing down due to the force of gravity. However, that all changed in the 1990s when astronomers realized that not only is the Universe expanding, but it’s doing so at an accelerating rate, like a runaway train on a downward slope.