A rare gravitationally lensed supernova could help astronomers determine how fast the universe is expanding and shed light on dark energy. Astronomers may be closer to understanding one of the ...

A new video provides a front-row seat to a cosmic drama that has been playing out for centuries. Since 1604, when astronomers around the world recorded a new 'star' that appeared in the sky, humans ...

New studies reveal how metallicity and stellar evolution determine whether massive stars expand into red supergiants prior to ...

An artist’s interpretation of light from a supernova passing through a gravitational lens, reaching Earth at different times. (CREDIT: Oskar Klein Center, University of Stockholm / Samuel Avraham & ...

When most people think of a supernova, they're thinking of a Type II core-collapse supernova. These are massive stars that have reached the end of their time on the main sequence. They've used up ...

An extraordinarily rare, gravitationally lensed supernova may offer a powerful new way to measure the universe’s expansion rate.

A rare gravitationally lensed supernova called SN 2025wny appears in five separate images due to the gravity of two ...

A distant stellar explosion has offered astronomers a rare natural experiment, one that turns gravity into a powerful optical tool. The object, known as SN 2025wny, appears not once but four times in ...