The science of stellar spectroscopy was pioneered by Joseph von Fraunhofer and Angelo Secchi. By comparing the spectra of stars including Sirius to the Solar, they observed dissimilarities during the power and variety of their absorption strains—the dark lines in stellar spectra attributable to the atmosphere's absorption of particular frequencies. https://andy1345r.articlesblogger.com/60095002/how-star-can-save-you-time-stress-and-money