Until now, our only source of gravitational waves has been binary star systems. Researchers from Northwestern University have potentially discovered a new non-binary source of gravitational waves ...

Gravity can exist without mass.” It’s a statement that upends a century of astrophysical dogma and, for some, sounds as ...

For an example of gravitational potential energy, consider a book placed on top of a table. To raise the book from the floor to the table, work must be done, and energy supplied.

Gravitational potential energy is the energy an object has by virtue of its position above the surface of the Earth. When an object is lifted, work is done. When work is done in raising the height ...

The world of energy storage is undergoing a transformation, and one of the most exciting innovations is the mechanical battery. Unlike traditional batteries, which store energy chemically, mechanical ...

Although the first detection of gravitational waves in 2015 gets a lot of press, the detection of GW170817—the first binary neutron star collision—confirms how important gravitational waves ...

A depiction of a dying star's cocoon (in yellow-green) surrounding a jet of energized material shooting out of a black hole (in red). Such cocoons are thought to be a new source of gravitational ...

This uses a decrease in gravitational potential energy as water moves down a river to turn a turbine. But the water gets that potential energy from the sun: Solar radiation heats up water, mostly ...

Gravitational waves reveal “mystery object” merging with a neutron star The so-called "mass gap" might be less empty than physicists previously thought.

Gravitational potential energy is the energy an object has by virtue of its position above the surface of the Earth. When an object is lifted, work is done. When work is done in raising the height ...