For years, cosmologists have argued over a simple question with an awkward answer: How fast is the universe expanding right ...

The light of a supernova that has traveled for 10 billion years to reach us has given us a new measurement of the Hubble constant – the accelerating rate at which the Universe is expanding. Called SN ...

Astrophysicists propose a new “stochastic siren” method using the gravitational-wave background from black hole mergers to ...

We have known for several decades that the universe is expanding. Scientists use multiple techniques to measure the present-day expansion rate of the universe, known as the Hubble constant. These ...

Orbit decay accelerates as solar activity rises, with no approved mission yet to raise the telescope's altitude A newly released plot of the Hubble Space Telescope's altitude shows just how quickly ...

Drawing together leading experts from across the field, an international collaboration of cosmologists has created a unified approach for measuring the value of the Hubble constant. Published in ...

Forbes contributors publish independent expert analyses and insights. Amanda Kooser covers the quirky side of science and space. IN SPACE: (FILE PHOTO) In this handout from the National Aeronautical ...

Astronomers have made new measurements of the Hubble Constant, a measure of how quickly the Universe is expanding, by combining data from the Hubble Space Telescope and the James Webb Space Telescope.