Moulton and Chamberlin suggested that a star had passed close to the Sun early in its life to cause tidal bulges and that this, along with the internal process that leads to solar prominences, resulted in the ejection of filaments of matter from both stars.
22.
The theory was based on the idea that a star passed close enough to the sun early in its life to cause tidal bulges to form on its surface, which along with the internal process that leads to solar prominences, caused material to be ejected repeatedly from the sun.
23.
"' H-alpha "'( "'H? "') is a specific deep-red visible spectral line in the Balmer series with a wavelength of 656.28 astronomers as it is emitted by many emission nebulae and can be used to observe features in the sun's atmosphere including solar prominences.
24.
The [ http : / / pubs . acs . org / cgi-bin / abstract . cgi / iechad / 1919 / 11 / i07 / f-pdf / f _ ie50115a022 . pdf biograpy of helium literature gives a article with the title Discovery of new spectrum lines in sun, since found to belong to helium . as reference, but the real title is " Notice of an Observation of the Spectrum of a Solar Prominence " and this article only mentions the D3 line and not helium.
