Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.

Dimensions beyond the four we’re familiar with could solve a host of problems in physics and cosmology. Columnist Leah Crane ...

A novel theory suggests that the current expansion rate of the universe is not fixed, but was in fact quite different in the ...

Astronomers use the Hubble constant to calculate the age and size of the Universe, the distances to objects beyond our galaxy, and the influence of dark energy. If we start whacking recklessly at this ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

Just as ocean waves shape our shores, ripples in space-time may have once set the Universe on an evolutionary path that led to the cosmos as we see it today. A new theory suggests gravitational waves ...

The space-based observatory will scan the cosmos in 102 colors we can't see to unlock the secret history of the universe. Reading time 2 minutes NASA’s newest eye on the cosmos is officially open for ...

A researcher has made a puzzling discovery while analyzing observations taken by NASA’s James Webb Space Telescope. While analyzing images for the telescope’s Advanced Deep Extragalactic Survey (JADES ...

Sure, they're not your typical baby pictures. But a global team of researchers says new images published this week show some of the clearest visualizations yet of the universe in its infancy. If our ...