Two satellite proposals threaten dark and quiet skies worldwide
Giant mirrors in space to create sunlight at night and an AI data center made up of 1-million satellites are undergoing regulatory approval. How did we get here?
Caught Doping: Going to Extreme Measures to Detect Ultraviolet Photons
No, it’s not illegal! Astronomers have developed a technique called delta-doping to make detectors that are much better at detecting ultraviolet light.
Shaken and Stirred: Putting the Local Group on a weighing scale.
The “timing argument” overestimates the total mass of the local group by oversimplifying it to a two body problem, a new study explore how the complex merger history of objects in the group affect its mass estimates.
Stay tuned to Radio YZ Ceti: Isn’t that a magnetic conversation between star and planet?
Astronomers have tuned their radio telescopes to YZ Ceti, and it might be crackling with a magnetic conversation of a star and its planet. Is this a breakthrough detection, or just stellar noise playing tricks on us?
Observing the Universe’s Teenage Angst with Dropout Galaxies and CMB Lensing
In today’s bite, we explore a new method for studying how structure grows during the Universe’s formative teenage years, using rebellious dropout galaxies and peer-pressured CMB photons.
Cosmic Fishbones: Strange Radio Streaks Behind a Racing Pulsar
As a pulsar speeds through the interstellar medium, it leaves behind a long, radio-emitting tail shaped by ram pressure. In the Lighthouse Nebula, however, the X-ray emission and radio streaks show unexpected orientations, offering clues to how cosmic rays escape and trace surrounding magnetic fields.