Scientists say fragments of energy may be the fundamental building blocks of the universe—not particles and waves.

GW190814’s gravitational waves suggest a hidden supermassive black hole nearby. The finding reshapes how binary black holes may form. Binary black holes are already among the universe’s most ...

How Akira Kurosawa's classic film, now 75, became the model for truthiness as a cinematic and cultural point of view.

An international research team has significantly advanced gravitational-wave astronomy by detecting 128 new cosmic collisions involving black holes and neutron stars.