The unusual downturn of the galaxy's spectrum, leading to an exaggerated spike in neutral hydrogen ... galaxy GS-NDG-9422 is dominated by nebular light, rather than starlight, is their strongest ...

A biohybrid system combines polymer nanosheets with E. coli to improve hydrogen production by capturing near-infrared light from the solar spectrum.

When a gas is very hot, it doesn’t emit all wavelengths of light. Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the ...