The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

In classical (or "Newtonian") mechanics, which describes the motion of macroscopic objects (i.e., things larger than an atom, ...

The force of gravity acts between all masses but only becomes noticeable when there is a really massive object like a moon, planet or star. We are pulled down towards the ground because of gravity.

When you was at the top and at the lightest, it's like being on a planet with less gravity, like Mercury. But when you was at the bottom on that bouncy part where you felt a bit heavier ...

Astronomers may have found a star racing through our galaxy at an incredible speed—dragging a planet along with it! If ...

The Law of Gravity is a bold roller-coaster ride through the potentials and pitfalls to be found in the merger of live classical music and ‘object theatre’, ​writes Joyce McMillan ...

Our research interests have been primarily in understanding the physical processes that control the evolution of terrestrial planets (Earth, Moon, Mars, ...). Modern space exploration has provided ...

Besides quantum theory, general relativity is one of two pillars of modern physics – our working theory of gravity and of the very large, of planets, galaxies and the universe as a whole.