Stars and Galaxies

A star in the Pinwheel Galaxy has exploded into a new supernova that was confirmed just last week. Here's how to see it for yourself in the night sky.

The close proximity of supernova 2023ifx and the amount of observations gathered since its discovery may lead to major advances in stellar death forecasting.

Astronomers are snooping on the Milky Way's galactic neighbors to gain insights about the ancient galaxies being viewed by the James Webb Space Telescope.

A star explosion in deep space is visible in amateur telescopes, although folks have had to battle low lighting conditions, haze and the occasional satellite trail to see it in action.

In a distant star system, a sunlike star orbits an invisible object that may be the first example of a 'boson star' made of dark matter, new research suggests.

A newly discovered supernova can be watched as it develops in real-time online and for free. The livestream will begin at 6:30 p.m. EDT (2230 GMT) on Friday, May 26.

During the last few days, astronomers have been pointing their telescopes toward a familiar celestial object in our spring night sky for a look at a rare event: A new supernova.

A young NASA mission spotted strange movements of X-rays in the supernova remnant known as Cassiopeia A, which may include an extremely dense and small star.

The stellar companions of more than a dozen stars orbiting the supermassive black hole at the center of the galaxy have gone missing — and astronomers want to know why.

Astronomers have made the first detection of a supernova in radio waves, finding that an exploding white dwarf star was feeding from a companion star like a cosmic vampire before it blew.

The radiation belt around the ultracool dwarf star, located around 19 light-years from Earth, is doubled-lobed like the radiation belts around Jupiter — but it's 10 million times brighter.

The eRosita bubbles of hot gas that extend 36,000 light-years out from our Milky Way galaxy are more complex than previously thought, a new study reveals.

The James Webb Space Telescope has shown that supermassive stars may lurk at the heart of globular clusters born shortly after the Big Bang.

New measurements suggest that the traditional view of the Milky Way as a galaxy with four major spiral arms extending out from a thick centralized bulge of stars could be wrong.

The James Webb Space Telescope has observed an early dusty galaxy over 12 billion light-years away during an explosive period of star formation.

The secrets of star formation are slowly coming to light in a huge new star atlas generated by astronomers, based on images of stellar nurseries.

A new study has determined the most likely origin of one repeating fast radio burst to be a dense object — potentially a neutron star — with a binary companion.

A warp in the fabric of space and time that acted like a giant magnifying glass may help solve a celestial mystery about the rate of the universe's expansion.

Dark energy, the mysterious force apparently driving the accelerating expansion of the universe, is spread uniformly across space and time, new observations of massive galaxy clusters suggest.

A new image from the Hubble Space Telescope gazes into the lair of a cosmic leviathan, a monstrous cluster of galaxies located nine billion light-years away in the constellation Draco.