Kevin, I believe in Angels, also. They are, by definition, extraterrestrial. They exist in some where/when that we currently have no access to with our level of Physics understanding (and I believe we are limited in our future development of Physics theory by our current very simplistic definition of dimension Time). But we are accessible to them! ... much the way past events/phenomena are accessible to us, but to experience even one phenomenon in the actual present of that occurrence is beyond our sensory capabilities due to the temporal lag from phenomenon to experiential impact. Star light is a fair example: science can tell a whole lot about the status of the star that 'lost the photon radiation' when it lost it, though we cannot actually know the present status of that star. How is that possible? ... Well, the photon energy traveled across vast spatial expanse carrying energy that 'has a present temporal variable inherent in the photon package', IOW, the photon stream has energy, spatial and temporal variable expression inherent in the package, yet we treat dimension Time as if it is some non-variable background. Relativity hints that such is not the case, yet we haven't constructed a mathematics to include temporal variability such as 'past', 'present', and 'future', we only hold time as non-variable in expression yet integrate it in increments of 'present'. What would happen to our conceptualizations if we considered Space, for instance, as having three variable expressions, linear, planar, and volumetric, and Time as three variable expressions of past, present, and future? We might define photon or other subatomic packages as existing in a 'pregnant' linear/present or linear/past, or planar/present, or volumetric/past, or volumetric/future. These continua would be explorable if we devised a mathematics to express such continua and explore the interaction between these coexistent continua. Aren't string theory and brane theory seeking to do something along those lines, but with an 'antiquated' definition of dimension Time?
Einstein invented the photon, and Goedel proved that by General Relativity there can be no such thing as time. If time travel exists, time does not. If time does not exist, causality is gone also. We'll need to do some more work on meaning and purpose, also.