The gas around the red giant star Betelgeuse revealed the effects of a newly found companion star, Siwarha, likely circling ...

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

‘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 team using @NASAHubble has made the first confirmed detection of a new type of astronomical object: a starless, gas-rich, ...

Betelgeuse’s long-standing mystery has been cracked: a hidden companion star is literally reshaping the giant from the inside out.

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 ...

Planetary systems begin in chaos. In their primitive form, many rocky and icy objects are careening through space, smashing ...

New findings from NASA's Hubble Space Telescope have helped astronomers to solve the mystery of why Orion's bright red supergiant Betelgeuse dramatically faded for a period of weeks last year. In ...

When telescopes like Hubble peer out into the cosmos, they can sometimes sneak a view of very distant objects using a phenomenon called gravitational lensing. This is where a massive object like a ...

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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 ...