All fundamental forces operating on astronomical scales exhibit a decrease in strength with increasing distance. A hypothetical force, decreasing with distance slower than the inverse square law, ...

Gravity, despite its pervasive influence, is the weakest fundamental force, easily overcome even by simple actions like lifting a pencil. While achieving and maintaining orbit requires significant ...

Gravity is the force of action between two objects. It’s called a natural force because it acts at a distance rather than needing to be in contact. Gravity is the force that holds us down on Earth and ...

Scientists have measured gravity at an extremely short distance, in what they hope will tell us more about extra dimensions. The rest of this article is behind a paywall. Please sign in or subscribe ...

A new way to measure the cosmic expansion rate could help resolve a long-standing cosmological crisis. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Physicist Markus Aspelmeyer vividly remembers the day, nearly a decade ago, that a visitor to his lab declared the gravitational pull of his office chair too weak to measure. Measurable or not, this ...

planets, asteroids and comets to orbit the Sun; moons to orbit planets; artificial satellites to orbit planets; a dropped mobile phone to fall to the ground. Back in 1687, Sir Isaac Newton realised ...