The force of gravity is expressed in terms of feet per second per second (or feet per second squared), and usually is notated as.
Exercise is a huge part of life and they do it with weights and harnesses to approximate the gravity of Earth.
Each astronaut does at least two hours a day to combat the effects of living in low gravity.
One of the most popular exhibits at many science centers lets you weigh yourself and see what you'd weigh on other worlds of our solar system.
Your mass is the same wherever you are, whether you are on Earth, in space, on another world.
Only your weight "number" changes depending on where you are.
Worlds with heavier gravitational pull will make your weight higher, while worlds with lower gravitaional influence will make your weight lower.For example, the pull of gravity on the Moon's surface is 1/6 that of Earth's and so your weight there would be 1/6 of what it is on Earth. Your mass is usually expressed in terms of kilograms.At the Griffith Observatory in Los Angeles, for example, visitors line up to see their weight while standing in front of exhibits about the different planets.It's really just a way to understand the pull of gravity on all the places of the solar system, but if you're watching your weight, it can give you a real mental boost to see that number change downward as you step on the scales for different planets.For example, let's say you weigh 120 pounds here on the surface of Earth.Here's your weight on other worlds: However, you'd have to be prepared to live on one of the coldest places in the solar system, far from the Sun. So, why does your weight change on different worlds? It reflects the relationship between your mass (that is, all the "stuff" you are made of) and the pull of gravity on the world you live on (in this case, Earth).