A century ago, a star in Andromeda named V1 launched a revolution in astronomy, revealing its true immensity and the origin ...

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

New research suggests that a troubling disparity in the rate of expansion of the universe, known as the Hubble constant, may arise from the fact Earth sits in a vast underdense region of the cosmos.

The Franklin Institute announced Nov. 11 that it is awarding the 2026 Benjamin Franklin Medal in Physics, one of the nation’s ...

Recent findings suggest a potential shift in our understanding of the universe’s expansion. After decades of acceleration, ...

The question of how fast the universe is expanding continues to confound scientists. Although it might seem like a fairly straightforward issue, the reality is that it has been perplexing the best ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The universe is expanding—but astronomers can’t agree how fast ...

The rate of the universe’s expansion has vexed astronomers for decades. Called the Hubble constant, the figure is quite different depending on how you get to it—fittingly, a source of constant ...

Astronomers may have misread cosmic acceleration for 27 years. The universe may be slowing down, not speeding up.

Whatever dark energy is, explanations for it have less wiggle room following a Hubble Space Telescope observation that has refined the measurement of the universe’s ...

For the first time, an international research team led by the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy ...