We must also apply the interferometer method to stars of the various spectral types, in order to afford a sure basis for future studies of stellar evolution.
All the evidence confirms the existence of dwarf and giant stars, but much work must be done before the entire course of stellar evolutioncan be explained.
Stratonoff finds that stars having spectra of the Orion and Sirian types--supposed to represent an early stage in stellar evolution--tend to congregate in or near the Milky Way.
On the other hand, some stars seem to have certainly increased in brightness, and the bearing of these changes on the question of "stellar evolution" will be obvious.
We come now to the consideration of a subject which has a most important bearing on the question of stellar evolution, viz.
The Third, and last, Part has been devoted to questions relating to the pre-nebular condition of the universe, and the bearing which these have on theories of stellar evolution.
Whatever may be the process of stellar evolution, there doubtless is an era of many hundreds of millions of years in the life of a star when it is passing through a planet-maintaining stage.
And now I propose to apply these ideas of stability to the theory of stellar evolution, and finally to illustrate them by certain recent observations of a very remarkable character.
Dr Alexander Roberts, of Lovedale in Cape Colony, truly remarks that the study of Algol variables "brings us to the very threshold of the question of stellar evolution.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "stellar evolution" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
