Sentences with phrase «interstellar spectral lines»
Two decades ago, astronomers found interstellar spectral lines at near - infrared wavelengths and said they likely arose from carbon - 60 molecules that had lost one electron each.
http://www.sciencemag.org/ Not exact matches
Historically, the fractions (which we call the abundances) of the different atoms in the interstellar gas have been measured using the distinct spectral «footprint» of each ion in the spectrum, which is a characteristic set of spectral lines.