Scientists think the moon may have an interior that's kind of similar to Earth's — but questions remain. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

You may have seen videos of astronauts jumping on the moon. Their movements appear bouncier and lighter than how we move on Earth, and this is thanks to gravity. Gravity is "the force by which a ...

The presence of a partially-molten layer between the Moon's rocky mantle and solid metal core is looking more likely following a study on its changing shape and gravity. Researchers from the NASA ...

LOS ANGELES — Over the New Year's weekend, a pair of spacecraft the size of washing machines are set to enter orbit around the moon. Their mission is to measure the moon's gravity field and determine ...

Mass is mass is mass. Physicists have three different definitions of mass, all thought to be equivalent. Measurements of the distance between Earth and the moon confirm that two of those masses are ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Chris Vaughan/Starry Night Deep below the Earth's crust, molten rock rises and falls, ...

You may have seen videos of astronauts jumping on the moon. Their movements appear bouncier and lighter than how we move on Earth, and this is thanks to gravity. Gravity is "the force by which a ...

The moon has come a long way since Galileo first peered at it through a telescope. Unmanned probes have circled around it and landed on its surface. Twelve American astronauts have walked on it. And ...