Physicists have been fudging their numbers for years not accounting for the huge amount of energy that is released if say two planets collide .

The people at Cern are concerned with momentum but not  momentum that underlies existence.  The Cern complex is traveling though the universe at very high speed measured in thousands if not hundreds of thousands of meters per second.  It is traveling as fast as Switzerland is and the Alps. If some Asteroid suddenly appears the size of manhattan with a depth of a couple of miles  and strikes the earth at high velocity . It has the force of both the movement of the earth and the asteroid combined..  That can be lethal to at least most of the surface of the earth.  Out in space on both the asteroid and the earth before they collide its just like here on earth. we hardly feel like the planet is moving. We have no sensation that the earth is moving. Same is true on the asteroid.  They don't start to feel each other's influence till close enough that gravity between the two causes some tidal effects that quikly increase as the two get closer into their collision. Then when they come together part of the earth just vaporizes as does most of the asteroid  that just hit it.  The combined effect of the explosion on impact is greater than 1000s of nuclear bombs all going off at once.  So there you have instant dark energy.  That water above the dam that will eventually fall and cause the generator turbines to spin looks just like water below the dam with that energy left out.  potential energy above the dam is real but there is actually no test with out letting it fall to the turbines to detect it.  The water molecules don't behave any different above or below the dam. surface tension is the same, density of the liquid is the same.  in the cosmos the energy of motion gets to be astronomical everything is moving.  Some percentage of everything will eventually collide. Chances are that virtually everything that can be seen in the distant universe because of light is a product of some collision.  That's light energy because if is after a collision.  before the collisions it is dark energy.