Decades ago, a renegade physicist suggested that gravity isn't so much a force as just a byproduct of the universe's tendency ...

NASA Artemis missions are working toward a near future where humans are an interplanetary species—lunar bases are planned by ...

What is space-time? Depending on how fast you're moving or how close you are do Earth's gravity can change the way time feels ...

Gravity isn’t uniform everywhere on Earth. You weigh more at the poles, for instance, than at the equator. Why? This viewer ...

It's been 286 days since astronauts Sonny Williams and Butch Wilmore have felt the pull of Earth's gravity. Gravity is really, really tough, tough, learning to live with it, but also without it ...

It's been 286 days since astronauts Sonny Williams and Butch Wilmore have felt the pull of Earth's gravity. Gravity is really, really tough, tough, learning to live with it, but also without it ...

It's been 286 days since astronauts Sonny Williams and Butch Wilmore have felt the pull of Earth's gravity. Gravity is really, really tough, tough, learning to live with it, but also without it ...

According to the space agency, visitors to space are at higher risk for loss of bone density and strength in the hip and spine because of the lack of gravity. Astronauts can lose up to 1% to 2% of ...