That sounds cosmicpolitan. Vogon paperwork is tedious.

Astrophysicists have determined that dark matter is more likely to be a concentration of matter in a parallel universe in which photons can not penetrate but gravity can. Other hints are the emerging virtual particles in the quantum realm. A civilization a million years more advanced than us may have found means to cross the boundary of a parallel universe. Its behavior would be quite unlike the inertia travel we are accustomed to.