Despite their small diameters—about 12.5 miles (20 kilometers)—neutron stars boast nearly 1.5 times the mass of our sun, and are thus incredibly dense. Just a sugar cube of neutron star matter ...

NASA’s James Webb Space Telescope unveiled a stunning new image from the farthest reaches of space. This groundbreaking image ...

When massive stars explode as supernovae, they can leave behind neutron stars. Other than black holes, these are the densest ...

The companion star in this system has a mass that is 1.174 solar masses (M ⊙), which is significantly lower than that of other known neutron stars with accurately measured masses. The nature of ...

Traveling unpredictably through the cosmos, the mass is thought to be either a rogue planet or a "failed star," also known as a brown dwarf. Only a close examination of the body's atmosphere will ...