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 ...

Free teacher resource for primary science. In a practical investigation, Mwaksy and Greg look at how unsupported objects fall ...

Gravity feels reliable—stable and consistent enough to count on. But reality is far stranger than our intuition. In truth, the strength of gravity varies over Earth's surface. And it is weakest ...

Research shows Mars' gravitational pull affects Earth's deep-sea currents and climate, causing warming cycles every 2.4 million years.

Gravity is the unseen force that shapes the universe, yet we rarely give it much thought. First explained by Sir Isaac Newton, it is the pull that draws objects toward one another based on their mass ...

Earth is the planet we have the best opportunity to understand in detail—helping us see how other rocky planets behave, even ...