I'm wondering if anyone can help me. I've lost the name and formula for a
concept dealing with gravity. The formula I'm looking for is how to find the
location between two masses at a fixed position where the gravity is equal. At
this location, since the pull of gravity are equal between the two masses, a third
"massless" object would experience "weightlessness".
The other thing I'm looking for is an article related to the above concept.
Someone had determined how they could "ride" this ridge of equal gravity from one
location to another. The analogy they gave was a spaceman, who had just enough
fuel for re-entry and minor course adjustments, could follow this path all the way
back home. It's similar to the "sling-shot" method they use to put probes into
space. I'm trying to find the article again and the author.
If anyone has any info, I'd greatly appreciate it. Thank you for your help!