Physicist explains X-rays that shouldn't exist in 'cold' plasma

For about 20 years, Caltech Professor of Applied Physics Paul Bellan and his group have been creating magnetically accelerated jets of plasma, an electrically conducting gas composed of ions and electrons, in a vacuum chamber ...

Image: High-power thruster qualification testing for Gateway

The blue hue of the Advanced Electric Propulsion System (AEPS) is seen inside a vacuum chamber at NASA's Glenn Research Center in Cleveland during recent thruster qualification testing. This 12-kilowatt Hall thruster is the ...

Image: Readying a little rover

An engineer prepares a small rover for testing in a thermal vacuum chamber on Oct. 24, 2023, at NASA's Jet Propulsion Laboratory in Southern California.

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