In 1925, grad student Cecilia Payne first proposed that stars were mostly made of hydrogen and helium and shaped our ...

Each of the spectra has a set of absorption lines created by the presence of hydrogen in the stars' atmospheres. Order the spectra, starting with the one that is moving the fastest toward us and ...

Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the bright hydrogen emission lines. Key fact Line emission spectra are ...

"The Spiderweb protocluster is an ideal laboratory for investigating the relationship between black holes and star formation ...

and the FACCTs GmbH used a chemical peculiarity of hydrogen to amplify the signals of magnetic resonance spectroscopy. In this way, the scientists were able to visualize previously unknown ...