Einstein’s Theory of General Relativity is currently our best approximation of how the universe ticks. But there are holes.

ST. PETERSBURG, Fla. — It's a tale as old as time itself: Isaac Newton sat under a tree, got hit in the head with an apple and came up with the theories of gravity and motion. So, the story itself may ...

GOTTFRIED LEIBNIZ, MATHEMATICIAN: When Isaac first explained his theory of gravity to me, I remember being impressed. Not by the theory, which, as far as I could tell, was basically that stuff falls ...

In a recent development, an innovative study has uncovered compelling evidence supporting a revised theory of gravity, particularly under conditions of low acceleration. This study signifies a notable ...

This week marks the 328th anniversary of the publication of “Principia,” Sir Isaac Newton’s groundbreaking work detailing, among other concepts, his laws of motions and universal gravitation. But ...

Every time a coffee mug drops, a satellite orbits or an astronaut floats, we are watching the same phenomenon play out under ...

Alex Chadwick talks Ira Flatow, host of NPR's Talk of the Nation Science Friday, about new examinations of the theories of Galileo and Isaac Newton relating to gravity. This is DAY TO DAY. I'm Alex ...

Here’s what you’ll learn when you read this story: Einstein’s Theory of General Relativity, an immensely important update to Newton's Law of Universal Gravitation, is currently our best approximation ...