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 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 ...

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 ...

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

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

Using a global network of telescopes, astronomers have detected the lowest-mass dark object yet found in the universe.

A team of astronomers used an "Earth-sized super telescope" to detect an object that emits no light, via gravitational ...

Astronomers have broken two records in one thanks to an incredible serendipitous alignment of cosmic objects. It's the ...

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

Barry Lienert, a geophysicist at the University of Hawaii, provides the following explanation. We start by determining the mass of the Earth. Issac Newton's Law of Universal Gravitation tells us that ...

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 ...