Our Galaxy’s Supermassive Black Hole May Have Had a Companion in the Past
Could there have been two massive black holes in our galaxy’s center at one time? New modeling of fast-moving stars in the Milky Way’s halo suggests the answer is yes.
Feed the Fire, Fade the Metals
Astrobites reports on whether cosmic clumps are “homegrown” or fueled by fresh inflows.
Are galaxies that travel through space in groups any different from those that fly solo? A new look at local galaxies provides clues.
Gas flowing into a galaxy is hard to detect, but a recent study simulated a dusty galaxy to understand how we might be able to uncover inflows with emission line ratios.
A Black Hole’s Puzzling X-Ray Bursts
A supermassive black hole awakened seven years ago, and it’s now behaving in a way astronomers can’t explain.
The Oldest Starlight
Astrobites reports on whether JWST’s most extreme high-redshift galaxy candidates aren’t galaxies at all, but the explosive deaths of the very first stars.
Monthly Roundup: Science of the Sun
Researchers search for the tiniest coronal jets, explore the Sun’s behavior from centuries ago, and examine space weather forecasts in this month’s Roundup.
How Galaxies Grow Up
A massive survey of images collected by JWST is shedding light on how galaxies grow and evolve.
Researchers explore how the tilt of merging galaxies can impact the eventual collision of their supermassive black holes.