Mystery of the Unknown

The unknown is a partial definition of mystery. In physical cosmology there are several obvious ones. What gravity really is, is the central mystery of cosmology presently I think.

   Graviton particles haven’t been found, it acts at the speed of light and is so basic and essential in holding planets together and making fusion work in stars. Galaxies couldn’t exist without gravity.

  There are many theories about what causes gravity and what space is and time. One can kind of construct their own model of cosmology mechanics from all of the custom theory parts on the physicists’  shelves. 

I can't recall at any given moment  too many of those subtle theories of what gravity may really be.  Time and space may not even exist. Gravity could be affects of quantum entanglement or uncertainty, Higgs field phenomena related to the holographic principle. Gravity  is tied into mass, energy, quantum decoherence and time as well. Time could just be an emergent phenomena of four different dimensional membranes intersecting and passing through each other. Life and time occurs in this 'Universe' where they intersect.

The basic universe could be massless like photons and neutrinos... mass is said to be a concatenated effected of quantum decoherence and entanglement in the higgs field. Gravity could be a variety of degeneration of mass entanglement as particles and fields try to iron themselves out and return to a two dimensional normal condition.
   There are so many possibilities.

One Piece at a Time

Recon Drones Into Poland May Have Been Sent by an Agent Provocateur

 Russia denies having sent drones into Poland of an attack kind. The Gerbera recon drones haven't military munitions on them. They also have a range of no more than 420 miles- too far for launches from Russia to reach Poland. 

There is a chance the wave of 19 Gerbera drones was some kind of media and treaty invoking mission by an unknown semi-intelligence agency and unknown agent provocateur.

https://en.wikipedia.org/wiki/Gerbera_(drone)

Even so, the Flight of the Mystery Drones shattering Polish air space may be reason enough for Senator Graham to ask for a Gulf of Tonkin style resolution to defend Poland against Russian aggression.

Gerbera drones are used mostly as decoys. Made of plywood covered with foam they cost about $10,000 apiece. Apparently they can carry a 5 lb load of plastic explosive, yet the range is reduced to fewer than 190 miles in that case. One-hundred ninety miles is a common flight range for simple recon tasks.