Hubble tension

Space Ancient Milky Way stars challenge the age of the universe and the Hubble tension

A new study uses ancient Milky Way stars to test the age of the universe and the Hubble tension.

Space Scientists develop a new way to measure the expansion rate of the universe Joseph Shavit

Space What a rare lensed supernova could mean for measuring cosmic expansion Joseph Shavit

Space A cosmic flash that could explain the birth of supermassive black holes