Einstein was not sure if the universe was expanding, contracting or static. He famously had a constant he could use to change this:
"…Einstein’s cosmological constant, is a coefficient that Albert Einstein initially added to his field equations of general relativity.
Einstein introduced the constant in 1917 to counterbalance the effect of gravity and achieve a static universe, which was then assumed. Einstein’s cosmological constant was abandoned after Edwin Hubble confirmed that the universe was expanding."
Einstein was not sure if the universe was expanding, contracting or static. He famously had a constant he could use to change this:
"…Einstein’s cosmological constant, is a coefficient that Albert Einstein initially added to his field equations of general relativity.
Einstein introduced the constant in 1917 to counterbalance the effect of gravity and achieve a static universe, which was then assumed. Einstein’s cosmological constant was abandoned after Edwin Hubble confirmed that the universe was expanding."
https://en.wikipedia.org/wiki/Cosmological_constant