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

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 ...

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 ...

Here's a scene you've probably imagined countless times: Isaac Newton lounging beneath an apple tree, suddenly getting bonked on the head by falling fruit, and boom—gravity is discovered. It's the ...

While many people around the world are opening presents and gathering with family as part of honoring of the birth of baby Jesus, some science enthusiasts are also celebrating another kind of luminary ...

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 ...

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 ...