Above the crown chakra, are the Universal chakras. These chakras are not personal, so they do not carry any karma. I open them as part of the Serpent Fire Tummo initiation. They open easily, most people can open them themselves, simply by asking for them to be opened.
The Earth heart chakra, in the center of the Earth, is a chakra shared by every human on the planet.
The sun, is the center of our solar system, and it is also a shared, universal chakra.
In the center of our galaxy, is another universal chakra.
The center of the universe, where the big bang began, is another universal chakra.
As the universe is infinite, finding the center can only be an abstract concept...
Opening the universal chakras gives one a nice sense of expansion, into the stars.