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 ...

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 ...

Researchers have stumbled upon a new form of astronomical object, hitherto unseen (or unnoticed), using NASA’s Hubble ...

Astronomers finally have the answer to a 20 year mystery. In A Nutshell Hubble Space Telescope captured evidence of two ...

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

For decades, astronomers have tracked changes in its brightness and surface features in hopes of figuring out why the star ...

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 ...

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 ...

NASA's Hubble Space Telescope has calibrated more than 40 'milepost markers' of space and time to help scientists precisely measure the expansion rate of the universe -- a quest with a plot twist.