Although general relativity (GR) is an elegant theory of gravity, we don't often need to use it. For most gravitational interactions, Newton's theory of universal gravitation works just fine. Newton's ...

According to our best understanding, the universe is expanding - and is doing so at an accelerating rate. This is believed to be caused by something ...

In recent decades, it has become better known as dark energy, which is believed to make up about 70% of the universe. Crucial ...

A newly merged black hole does not become quiet at once. It vibrates, sheds energy through gravitational waves and produces a ...

Miller’s planet sits dangerously close to Gargantua, where gravity makes time pass at a radically different rate than on ...

But the evidence indicates people should focus on diet quality, not just calorie quantity. Avoid ultra-processed foods, ...

When it comes to losing weight, it turns out the simple math of counting calories doesn’t always add up. Fad diets come and ...

Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...

Josh Jetter, Fortastra chief technology officer, is Relativity Space's former senior avionics engineering director and Impossible Aerospace's engineering director. Credit: Fortastra SAN FRANCISCO – ...