Home

    Rocketry

    Orbits

      Gravity

      Kepler's Laws

      Orbital Elements

      Types of Orbits

      Orbit Transfers

      Going to the Moon

    Technology

The most dominant force acting on a body in space is called Gravity. Gravity is an attractive force that acts on all matter.

G is the gravitational constant. G=6.673x10^-11. This constant is the same for every body in the universe. r is the radius between the center of the two objects, and m is the mass of each object.

Gravity acts on all matter, no matter how small they are. For example, the keyboard and mouse on a computer are experiencing a force towards each other of approximately 1 nano-Newton (0.000000001 Newton), compared to the force acting on an average human standing on the surface of Earth which is approximately 800 Newton, 800 billion times greater than the keyboard mouse attraction.