Charting the Cosmic Shoreline: Which Planets Have Atmospheres?
New observations of the M-dwarf exoplanet Gliese 486b help astronomers map the location of the cosmic shoreline, which separates planets with atmospheres from those without.
Astrobites reports on the potential discovery of a dark-matter-free dwarf galaxy hiding in the tentacle of a jellyfish galaxy.
The Astronomical Journal turns 175 this month — join us in celebrating the journal’s impact and looking back on its history.
Often characterized as “failed stars,” brown dwarfs are cool, cloudy objects that are not fully understood. Could their poles be home to swirling winds that drive intriguing observational trends?
How can we track down colliding neutron stars as quickly as possible? New research shows that the nearly 20-year-old Swift Observatory might be our best bet.
Astrobites reports on JWST observations that get up close and personal with the famous supernova remnant Cassiopeia A.
New simulations show how odd radio circles could form when supermassive black hole jets blow bubbles in intergalactic gas.
The Hedgehog galaxy is one of the most isolated dwarf galaxies known — but despite its serene location, it might not have formed any new stars in the past 100 million years.
Citizen scientists have identified 7,000 swirling vortices on Jupiter, leading to some surprising findings.