For nearly a century, astronomers have been striving to measure the rate at which the Universe is expanding. Two main methods have been used: one based on observations of the cosmic microwave ...

Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

A new Utah Valley University study is providing new evidence in a debate astronomers across the world haven’t been able to agree on — how fast the universe is expanding. The findings may add more fuel ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

"We showed that a void model is about one hundred million times more likely than a void-free model." Earth, its cosmic home the Milky Way, and even the very local region of universe around us could be ...