The Hubble constant is one of the most important numbers in cosmology because it tells us how fast the universe is expanding, which can be used to determine the age of the universe and its history. It ...

For 35 years, the Hubble Space Telescope has taken photos of celestial objects across the universe. Look back at 10 photos ...

Earth rotates, the Sun rotates, the Milky Way rotates – and a new model suggests the entire Universe could be rotating.

Wendy Freedman and her team have been able to measure the expansion of our universe, leading to more insights into the cosmos ...

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

A team of scientists has proposed a revolutionary idea to explain one of the greatest contradictions in our understanding of the universe: the discrepancy in measuring its rate of expansion, known as ...

To understand why this matters, it helps to know what’s at stake. Scientists use a number called the Hubble constant to describe the universe’s expansion rate. One method measures the light ...

Hubble’s 35-year journey showcases humanity’s boldest space achievements, capturing everything from new stars forming to ...

Their method yielded a Hubble constant value of 67.1 km/s/Mpc with an uncertainty of +6.3/−5.3. This value is consistent with both measurements, and therefore not favoring either side of the ...

This ultraslow rotation could resolve the discrepancy between different measurements of the Hubble constant. "The standard concordance cosmological model has some wrinkles," study co-author ...

If our galaxy lies inside such a void, that could explain why local measurements of the Hubble constant seem too high. Galaxies inside a void experience a gravitational pull outward, flowing ...