‘Pursuit of the universe’s expansion rate began in the 1920s with measurements by astronomers Edwin P. Hubble and Georges Lemaître. In 1998, this led to the discovery of “dark energy,” a mysterious ...

A new study looked at how the telescope would be ending its journey, and the moment might be disastrous for Earth, with a ...

NASA announced Thursday that its Hubble Space Telescope (HST) has calibrated more than 40 "milepost markers" of space and time. The mile markers help scientists measure the expansion rate of the ...

The Virgo cluster, despite being millions of light-years away, closest large galaxy cluster to Earth. The Virgo galaxy ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers believe they’ve solved, at long last, a mystery first discovered nearly a decade ago ...

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Why did some galaxies from the early universe suddenly stop making stars? Astronomers look back in time to find out. Monisha Ravisetti was a science writer at CNET. She covered climate change, space ...

This collection of 36 images from NASA's Hubble Space Telescope features galaxies that are all hosts to both Cepheid variables and supernovae. These two celestial phenomena are both crucial tools used ...

With 30 years of marathon, NASA's Hubble Space Telescope has achieved more than 40 "milepost markers" of space and time to expand scientists' knowledge on the measurement of the expansion rate of the ...