Learn how to calculate gravitational forces on a spacecraft from Earth and the Moon! Step-by-step physics tutorial covering force equations, vectors, and practical examples for orbital mechanics.

We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole ...

Gravity is a ubiquitous part of our daily lives — whether we’re being tragically brought to our knees after tripping on the rug or gleefully jumping from a swing’s apex. But despite how common the ...

Of the four fundamental forces of physics, gravity is the one we’re most familiar with in everyday life, but it’s also the only one that can’t currently be explained by quantum physics. Now scientists ...

Unifying gravity and quantum theory remains a significant goal in modern physics. Despite the success in unifying all other fundamental interactions (electromagnetism, strong force and weak force) ...

A long-standing challenge in physics has been to integrate gravity into the Standard Model, which successfully describes the electromagnetic, weak, and strong forces. The difficulty lies in the ...

Oct. 3 (UPI) --The 2017 Nobel Prize for physics was awarded Tuesday to three Americans for their contributions to the study of gravitational waves. Rainer Weiss, Barry C. Barish, and Kip S. Thorne ...