Plasma cosmology

Plasma cosmology is a way of thinking about the universe that looks at how hot, charged gases called plasmas behave. Most scientists today think that gravity is the main force that shapes the universe. But plasma cosmology suggests that plasmas have a bigger role in how stars, galaxies, and other large structures form and change.

The idea began in the 1960s and 1970s with scientists Hannes Alfvén and Oskar Klein. They believed that material and antimatter exist in equal amounts across the universe. They also thought the universe has always existed, instead of starting with a Big Bang. They believed the universe expands because matter and antimatter are constantly destroying each other.

Most cosmologists and astrophysicists do not support plasma cosmology. This is because it does not match what we see in space as well as the Big Bang model does. Very few research papers about plasma cosmology have been published since the mid-1990s. Some people use the term “plasma universe” to describe the same idea. Plasma cosmology is different from a group of incorrect ideas called the Electric Universe. These ideas wrongly claim that electric currents power stars like light bulbs. They ignore the well-known science that shows stars shine because of nuclear fusion.

Alfvén–Klein cosmology

In the 1960s, a scientist named Hannes Alfvén, who won the Nobel Prize in Physics in 1970, had an idea about how the universe works. He believed that special gases called plasmas help shape the universe. Alfvén used what we learn from small lab experiments to guess what might happen on huge scales in space.

With another scientist, Oskar Klein, they created a model called Alfvén–Klein cosmology. In this model, the universe has equal amounts of normal matter and antimatter. These two types don’t mix well. Alfvén thought their meetings could explain why the universe seems to be spreading out and why we see certain kinds of lights from space. However, other scientists later found problems with this idea.

Plasma cosmology and the study of galaxies

Hannes Alfvén believed that plasma and electromagnetic forces were very important in the universe, possibly even more so than gravity. He thought these forces could help pull together clouds of gas and dust to form new stars.

Later, Alfvén and Anthony Peratt suggested that plasma physics could explain many mysteries in the study of stars and galaxies. Peratt showed through experiments and computer simulations that plasma could form shapes similar to galaxies. He suggested that galaxies might form when plasma filaments come together.

Comparison with mainstream astrophysics

Standard astronomical modeling uses gravity to explain how stars, galaxies, and other large structures form and move. It relies on ideas from Albert Einstein's General Theory of Relativity and the orbits described by Keplerian motion. It also uses information from high-energy astronomy and particle physics in cosmology.

Some people who support plasma cosmology think that electric forces in plasmas are very important in shaping the universe. They suggest these forces might explain how galaxies change and why some parts spin faster than expected. However, most scientists believe the current evidence, especially from the cosmic microwave background radiation, supports the standard Big Bang model more than plasma cosmology.

References and notes

This section contains references and notes, which help show where the information in the article comes from. They are used for people who want to learn more, but they are not needed for younger readers.