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 ...

The resulting spectrum confirmed the redshift to ... Until enough stars had formed and were able to ionize the hydrogen gas, no such light—including Lyman-α emission—could escape from these ...