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

Hubble’s images don’t just look beautiful — they reveal galaxies in the middle of violent transformation. From collisions and mergers to tidal stretching and starburst explosions, the universe is ...

Astronomers have produced the most detailed map yet of dark matter, revealing the invisible framework that shaped the Universe long before stars and galaxies formed. Using powerful new observations ...

The venerable Hubble observatory is going strong despite its decades in space and the advent of next-generation successors ...

For decades, astronomers have been trying to nail down the value of the Hubble constant—a measure of how fast the universe is expanding. But some cosmologists say there’s evidence that the universe is ...

On Oct. 4, 1923, Edwin Hubble took a photographic plate of the Andromeda Nebula (as it was known then) using the 100-inch Hooker telescope at Mount Wilson. The next night, Oct. 5th, he took another ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their results match “local” measurements but clash with early-universe estimates, ...

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The cover of the March 26, 1990 issue of Aviation Week & Space Technology, is a painting of the 13-ton NASA Hubble Space Telescope. NASA's space shuttle Discovery, in this painting, depicts the $2 ...