[Red Badger]

Since gravity is the name of the effect that mass has on the fabric of space-time, depressing it and hence producing a ‘downward’ spiral toward the mass, we need to invent ‘negative mass’ to produce the exact opposite effect, an ‘upward spiral’ away from, or at least raising, the fabric of space-time..............

[no-to-illegals]

Believe the post has the theory of a fabulous engine.