Cyclones on Earth and spiral galaxies in space have several features in common.

Similarities

Both have spiral arms extending from centers that are hotter than their surroundings. Close to their centers, their arms rotate almost as fast as the centers themselves. The rotation speeds of their arms fall off more slowly with distance from their centers than is the case for vortexes and solar systems.

The centers of these bodies push hot gas up and away, and their far edges show at times signs of counter-rotation.

The list of similarities is long.

Plasma jet ejected by a galaxy

By NASA and The Hubble Heritage Team (STScI/AURA) HubbleSite: gallery, release., Public Domain, https://commons.wikimedia.org/w/index.php?curid=102873

Conventional and alternative theories

But conventional theory sees these similarities as purely coincidental. Cyclones are driven by difference in temperatures, while spiral galaxies are driven by gravity. Any electric activity seen in the form of lightning flashes and plasma jets are secondary features. The primary drivers are temperature and gravity.

However, the Electric Universe community sees this differently. Their interpretation is that cyclones and galaxies are primarily electric phenomena, with temperature and gravity playing secondary roles.

Electric interpretation

Charge imbalances that pull light matter in towards the center is the primary driver in both cases.

Cyclones pull air in towards their centers in the same way and for the same reason that galaxies pull plasma in towards their center. Heavier matter, such as clouds and rain, or stars and planets, are pulled along by the currents while simultaneously thrown out to the sides by the centrifugal force.

This produces the rope-like patterns of the arms seen in both cases.

The whole is driven externally by incoming plasma currents.

Galaxies are cyclones in space

This model requires no dark matter or dark energy to explain rotation speeds. It only requires the existence of plasma currents. Seen in this perspective, cyclones and galaxies look alike because they are alike. Galaxies are as it were cyclones in space.