These series were observed a few years ago by Prof. Fowler by sending a heavy discharge through a mixture of hydrogen and helium; previously they had been observed only in star spectra.

retaining some hydrogen in their envelope, named after their prototype. One of the stars reported in the study, named Gaia DR3 52, turned out to be a hot subdwarf of spectral type O(He).

Said Spectral President Jenifer Osterwalder. By utilizing Energy Tech's advanced sodium-ion energy storage combined with a fully commercialized version of Essence Global's Hydrogen On Demand ...