Electrothermal-chemical (ETC) gun

209 green fireball/orb sightings near Sandia New Mexico 1948-1950. Copper powder residue found as physical trace evidence. 116 pages of investigations released via PURSUE Release 2. Green fireballs ap

Greek engineer starts E-layer field reversal concept. Earliest compact torus conception. Presented at 1958 Geneva.

Winston H. Bostick publishes 'Experimental Study of Ionized Matter Projected across a Magnetic Field' in Physical Review, coining the term 'plasmoid' for self-contained plasma-magnetic entities.

U.S. high-altitude nuclear tests provide empirical data on high-beta plasma stability and diamagnetic cavity formation in the Earth's magnetic field.

The Astron experiment established the field-reversed configuration geometry that prefigured modern FRC research.

H. Alfven and colleagues publish the technique for magnetized co-axial plasma sources, which later forms the basis for the CTX experiment.

December 1960 Radio-Electronics magazine publishes 'Ball Lightning for Defense?' stating: 'Electronic fireballs of highly concentrated charged particles (plasma) might be used to destroy missiles... T

Pulsed power technology begins rapid development, supported by the Atomic Energy Commission and Defense Nuclear Agency for radiation source testing.

A 1.4-megaton detonation at 400km altitude creates a massive high-beta plasma fireball, demonstrating stable macroscopic plasma structures on a geophysical scale.

Project ORION is terminated primarily for political reasons, ending early research into external pulsed plasma propulsion despite promising technical results.