How to accelerate to the speed of light (theroeticaly)

by
slaveboy2000

Calculating a Hohmann Transfer

by
rkatch

A littleBit of the Universe

by
calrobinson11

How to Listen to RADAR Signals From Space.

by
philip42

Magnetic Acceleration Space Shuttle

by
Aegirson

Make your own 3D printed Chinese space ship and station

by
gpvillamil

How to Send Art Into Outer Space

by
noahw

Mechanics of Time Travel

by
KronoNaut

Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!

active| newest | oldestGravity is defined as:

Force = (M1 x M2 x G) / r squared

M1 and M2 are the masses of the two objects concerned. G is the gravitational constant (about 6.67) and r is the distance between the centres of mass of the two objects.

Therefore, as the force approaches 0, the distance approaches infinity.

So, from a physics standpoint, there is no distance at which the earth's gravity, or indeed the gravity of any object, will not exist.

The distance at which it becomes negligible, depends on how sensitive you are =]

distanceas d^{2}- post the correct formula if Mr Halford has got it wrong.L

orbiting, where you're constantly falling towards the Earth but never getting any closer to the ground (through moving around it). Or put another way the effect of gravity is balanced with the "centrifugal" force which would otherwise throw you away from the planet.To do this you need to be out of the atmosphere (which would slow you down), low Earth orbit starting at ~ 160Km.

To get far enough away as you wouldn't feel the effect at a standstill, I don't know.

L