For over two centuries, we have watched the red giant R Leonis dim and brighten with regularity, but this 'heartbeat' is beginning to speed up near the end of the star's life.
"The surprise that a supposedly quiet, discless system could drive such a spectacular nebula was one of those rare 'wow' moments."
Using new observations from the Hubble Space Telescope and observatories on Earth, scientists have confirmed the existence of Betelgeuse's elusive companion star, named Siwarha.
"This is a tale of a failed galaxy."
The Westerlund 2 star cluster is home to some of the Milky Way's brightest stars.
The axion could be a contender to explain the mystery of dark matter.
Using the Hubble space telescope, astronomers have imaged "'Dracula’s Chivito" the largest site of planetary birth ever seen.
A sampling of aging Sun-like stars demonstrates that they likely eat their closest planets.
"We do not know with certainty that we found a superkilonova, but the event nevertheless is eye-opening."
"It's like looking back in time in a sense, to that violent period of our solar system when it was less than a billion years old."
