Stevenson 218 is the largest known star in the universe, located about 18,900 light-years away in the constellation of Scutum and far surpassing even the sun in size and brightness. So immense that it ...

The impact that carved out the South Pole-Aitken basin on the moon appears to have come from the north, not the south as ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

The Flagship 2 simulation, developed using an algorithm by University of Zurich astrophysicist Joachim Stadel, is the largest ...

This article, originally titled "The Man Who Discovered the Universe," is from the Summer 2025 issue of Air & Space Quarterly ...

Gamma-ray bursts (GRBs) are the most energetic and luminous explosions in the universe. However, they are fleeting and often ...

A problem that has long been considered impossible to solve and that now, thanks to a breakthrough, can be calculated quickly ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

Using the world’s largest digital camera, Rubin will capture a full view of the southern sky every three days.

The James Webb Space Telescope's latest image shows eight spectacular examples of gravitational lensing, a phenomenon that ...

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to ...