NASA's James Webb Space Telescope recently zeroed in on the Bullet Cluster—delivering highly detailed images that show a ...

Astronomers have uncovered a colossal, searing-hot filament of gas linking four galaxy clusters in the Shapley Supercluster a ...

"Little red dot" galaxies discovered by the James Webb Space Telescope in the early cosmos appear to be ruled by supermassive black holes that are 1,000 times too massive.

According to MOND, the modified gravitational force for each galaxy is calculated from the mass-to-light ratio of its stars—their total mass divided by their luminosity.

In the nearby universe, an elegant ratio reigns: the mass of each central black hole is around 0.1 percent, or one thousandth, of the starry mass of each host galaxy. On supporting science journalism ...

"We have discovered a galaxy that has been 'perfectly preserved' for billions of years, a true archaeological find that tells us how the first galaxies were born and helps us understand how the ...

These researchers explain galaxies’ missing gravity by tweaking Newton’s law of gravity instead, an approach called modified Newtonian dynamics, or MOND. According to MOND, the modified gravitational ...

Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held together by gravity. Nearly all large galaxies are thought to also contain ...

The 1.4-billion-solar-mass black hole powering a remote quasar named ULAS J1120+0641 (illustrated) in the constellation Leo is half as massive as the stars in the surrounding galaxy, a ratio ...

A new University of Kansas survey of distant galaxies using the James Webb Space Telescope reveals never-before-seen star formation and black hole growth at "cosmic noon"—a mysterious epoch 2 ...

The James Webb Space Telescope revealed galaxies from more than 13 billion years ago that seem to be as mature as the Milky Way is ... distance 13.1 billion light years, mass 100 billion stars, ...