Nice to see some astronomy/cosmology post here. I quickly added the tag astronomy.
Minor nitpick:
In 1929, Edwin Hubble discovered that the universe is expanding.
It appears to be expanding. While the consensus is that it does expand, there are quite a few unexplained details and alternative hypotheses about that.
Nice to see some astronomy/cosmology post here. I quickly added the tag astronomy.
Minor nitpick:
It appears to be expanding. While the consensus is that it does expand, there are quite a few unexplained details and alternative hypotheses about that.