Neutron star and black hole masses in binary systems are calculable using Kepler's laws of motion, based on orbital parameters and object speeds. Merging neutron stars or black holes emit ...

Astronomers discover a low-mass dark object through gravitational lensing and multiple radiotelescopes across Earth.

Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of ...

Scientists using a global array of radio telescopes have detected the universe’s lowest-mass dark object by observing how it warped light through gravitational lensing. The invisible mass, about a ...

The object was detected by observing how its gravity distorts light behind it. Astronomers have discovered an extremely faint ...

A global network of telescopes was used to detect the smallest dark object with the lowest mass in space, which was too faint ...

Astronomers cannot directly weigh celestial objects like galaxies; indirect methods are necessary. Mass determination leverages the relationship between gravity and mass, utilizing orbital periods and ...

It's fun to think about how we know stuff. For instance, the sun has a mass of about 2 x 10 30 kilograms. That is such an enormous mass that it's difficult to comprehend. And if it's so difficult for ...

Scientists have blown stargazers’ collective minds after discovering a massive dark object in space that’s completely ...

Dark matter is an enigmatic form of matter not expected to emit light, yet it is essential to understanding how the rich ...

Speed can make objects act as if they have more mass, but can you ever make an object appear to have less mass? It’s true that speeding an object up to considerable fractions of the speed of light ...