Gravity was the focus of 20th century astronomy
For the 21st century, it will be electromagnetism and plasmas in addition
This forthcoming scientific revolution is presaged by the rapid pace of discoveries about our own star, the Sun, and its total plasma environment, and discoveries about the nature of the interstellar medium.
In volume, 99.999% of all the observable matter in the universe exists in the plasma state. This had led to the coinage of the term "Plasma Universe."
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