Astronomers have long understood that the universe is expanding—in other words, the space in between cosmic objects that aren ...

"As fascinating as the galaxy appears at visible wavelengths, some of NGC 5643's most interesting features are invisible to ...

Over the last ten years, OPAL has observed Uranus' northern hemisphere, which has faced the inner solar system for the ...

New Hubble Space Telescope images of a black hole-powered quasar reveal 'weird' structures and gigantic jets of energy that ...

These instruments, like the Hubble Space Telescope, reported a value of around 73 km/s/Mpc. The difference between these ...

NASA's Nancy Grace Roman Space Telescope team has successfully integrated the mission's telescope and two instruments onto ...

The Hubble Space Telescope has peered deeper than ever before into the heart of the supermassive black hole-powered quasar 3C ...

The rate of expansion of the universe today is a figure known as the Hubble constant, which is typically measured in units of ...

New observations from the James Webb Space Telescope suggest that a new feature in the universe—not a flaw in telescope ...

Fresh corroboration of the perplexing observation that the universe is expanding more rapidly than expected has scientists ...

The Hubble Space Telescope has been imaging the outer planets of our solar system for a decade, learning about their strange ...

For years, scientists have been troubled by an unusual feature of our universe. It appears to be expanding faster today than ...