A star at bottom-right and a bright jet leading from it towards top-right.
Features

How to Slice a Star

Massive stars are not typically inclined to go gentle into the good night. Some, new work suggests, might dramatically cut themselves in two using a “relativistic blade.”

radio image of the star Betelgeuse

Three recent studies of the famous red supergiant examine the aftermath of the Great Dimming, probe the possibility of a stellar merger, and reconsider some critical evidence that suggests that Betelgeuse was once two stars.

active galaxy Hercules A

Astrobites reports on the changing-look active galactic nuclei seen in the first year of the fifth Sloan Digital Sky Survey.

cartoon showing different types of exoplanets
Features

K2-18b May Not Be Habitable After All

A new interpretation of JWST spectra suggests that exoplanet K2-18b is a gas-rich world without a habitable surface rather than an ocean world.

Hubble Space Telescope image of a dwarf starburst galaxy

While collisions between dwarf galaxies usually result in bursts of star formation, new research suggests that galaxy interactions can also make star formation shut off.

Illustration of an accretion disk swirling around a supermassive black hole

New research explores how a star colliding with a disk of gas around a supermassive black hole might give rise to the quasi-periodic eruptions seen in certain galaxies.

artist's impression of the view from the surface of Sedna

Astrobites reports on the possibility that an ancient rogue planet is responsible for the unusual orbits of a trio of solar system objects called sednoids.

simulation results showing a variety of minidisk behaviors

Researchers investigate the behavior of minidisks: the small disks of gas that collect around the individual supermassive black holes in a binary pair.