For the gravitational wave background, that goes double. Let’s start with a really simple visualization. Imagine the universe as a lake with kayakers rhythmically paddling around it.

To detect the gravitational wave background, astronomers studied fast-spinning stars called millisecond pulsars, which are dead stars that spin up to 700 times per second with astonishing ...

The claim of a gravitational wave background suggests the universe is constantly roiled by violent events that happened over the past 13 billion years.

The findings “open a tantalizing new window — the gravitational wave window — and offer a first glimpse into the population of supermassive black holes,” said Priyamvada Natarajan, the Joseph S. and ...