The Hubble tension is one of the most hotly debated discrepancies in all of astronomy. It centers around a number called the ...

A grand spiral galaxy takes center stage in a new image from the Hubble Space Telescope. The galaxy, known as NGC 5643, is ...

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

The rate at which the universe is expanding is expressed as a value called the Hubble Constant, generally abbreviated as “H 0 ...

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

The Hubble Space Telescope has captured its best-ever image of the Antennae Galaxies. Previous images, taken in 1997 and 2006, were improved with upgrades from servicing missions. Hubble's 2006 image ...

Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer ...

Hubble was right!' The largest cosmic survey from the James Webb Space Telescope indicates scientists may need another ...

This is all within 16,000 light-years of the black hole." The Hubble Space Telescope has stared deeper into a quasar than ever before, discovering "weird" features in its vicinity. Quasars are the ...

The findings offer a crucial cross-check for previous Hubble Space Telescope measurements of the universe's mysterious ...

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