Using cutting-edge theoretical models and data from NASA's Chandra X-ray Observatory, scientists have transformed astronomical observations into detailed 3D models of cosmic objects — models that ...

Add Yahoo as a preferred source to see more of our stories on Google. The striking object appeared as bright as Saturn in the vicinity of the constellation Cassiopeia, and historical chronicles from ...

This illustration charts the evolution of the SNR 1181 remnant, from its creation when a carbon-oxygen-based white dwarf and oxygen-neon white dwarf merged, to the formation of its two shock regions.

A violent and chaotic-looking mass of gas and dust is seen in this Hubble Space Telescope image of a nearby supernova remnant. Denoted N 63A, the object is the remains of a massive star that exploded, ...

The rare event was documented in historical records from 1181. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The ultimate cosmic "cold case" ...

For six months in 1181, a dying star left a mark in the night sky. The striking object appeared as bright as Saturn in the vicinity of the constellation Cassiopeia, and historical chronicles from ...