Negative mass
In physics, negative mass is  with negative properties. Negative star mass can be created by imploded stars, like the unusual dead star discovered by the  in 2269. () A pocket of negative mass was an indication of an alternative parallel universe connected to the mycelial network. In 2256, these pockets were discovered by the . ()

See also 
 Negative energy

External links 
 
 How can something have a negative mass, and what does that mean?

de:Negative Masse
Physics