Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, ...
Astronomers have discovered the smallest dwarf galaxy ever seen. It is a mystery how the satellite galaxy of Andromeda ...
In just over three years since its launch, NASA's James Webb Space Telescope (JWST) has generated significant and ...
Astronomers have learned that galaxies tend to start out small and grow larger by collecting gas and merging with other galaxies. But most dwarf galaxies that made stars before the so-called ...
XRISM has uncovered how galaxy clusters evolve—violent mergers create turbulence, preventing hot gas from cooling. This ...
The burst's host galaxy is more than halfway across the observable universe and up to 100 times fainter than other host ...
The James Webb space telescope looks further back in the universe than any other instrument. Now a baffling puzzle has been ...
A "classification" is when a volunteer or citizen scientist finishes marking up or sorting one image or other piece of data.