Type Ia supernovae

Space 2,884 exploding stars deepen the mystery of dark energy

Three decades of supernova observations have been rebuilt into one dataset, revealing another challenge to constant dark energy.

Space Dark energy reversal cannot close the universe’s expansion gap

Space Supernovae help astronomers measure how the Universe expands over time Joseph Shavit

Space Our local universe’s expansion rate doesn’t add up, astronomers find Joshua Shavit