Confusion continues in the physics community over the precise value of the gravitational constant (G), a fundamental constant ...

The gravitational constant, dubbed big G, determines the strength of the attraction between two masses anywhere in the universe. Scientists have been trying to measure big G for over 225 years, but ...

The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study suggests this mysterious ingredient may not be necessary after all. Using an ...

The Sun is not nailed to the center of the solar system. It moves, wobbles, and traces a small loop through space, tugged by the combined gravity of every planet in orbit around it. Yet the whole ...