Negative masses are the objects which has opposite property of a mass body meaning it has a gravity which is repuslive and instead of benting spacetime it curves upward which means time can be negative there or time is really fast because ( neg mass curves the spacetime upward) .
The planets are benting space time at the universe but look at to the parrallel universe.
1. Let say that parallel universe exists and the thing that acts as layer between these two is the space itself like space time
The benting of space by universe is giving opp reaction to parallel universe so the space is benting upward so for the parallel universe that part is feeling neg gravity as it is opp to universe. Hence at that case
mass is neg but for only p.universe becasue of the effect of the universe.
2. As we know Speed= distance/time so what if the speed is negative? I know it's impossible for speed to be negative but theoretically it is possible . Speed is just a ratio of distance and time so if we could make a negative value of time again theoretically then both speed and distance can be negative too. To make time negative we have to travel faster than light but at that scenario speed is higher and time's neagtive so to attend negative speed we have to travel faster?
