# IF AN ASTRONAUT WEIGHS 180 POUNDS ON EARTH WHAT WOULD BE HIS WEIGHT IN OUTER SPACE?

A pound is a unit of mass. Mass is constant throughout the cosmos, so if the astronaut has a MASS of 180 pounds on Earth, it will be the same even in space. But, the astronaut doesn't have a weight of 180 pounds. His MASS is 180 pounds. Weight = mass x gravity. So, in space, his weight is 0 Newtons.

### Do astronauts have weight in space?

Any object that has mass has weight even in space. If an astronaut weighs 195 pounds while standing on the planet then he/she will also weigh 195 pounds while in space. Earths gravity, which determined the weight, will exert the same force on this astronaut because the mass is the same. While in space, it may appear the astronaut is "floating", he/she is actually in free fall. What this means is, as they travel around…

### How does gravity on Mars compared to Earth and Venus?

Gravity on Mars is exactly the same as it is on Earth and on Venus, with all of the same characteristics and behavior. The strength of gravitational forces and their directions, as well as the actions of projectiles and of objects in free fall, are calculated using exactly the same equations and formulas on all three planets. Mass, weight, density, buoyancy, pressure, temperature, volume, area, friction, speed, velocity, acceleration, work, power, and energy are also…