“A molecule of hydrogen…whether in Sirius or in Arcturus, executes its vibrations in precisely the same time. Each molecule therefore throughout the universe bears impressed upon it the stamp of a metric system as distinctly as does the metre of… — James Clerk Maxwell Copy Share Image
In the heavens we discover [stars] by their light, and by their light alone ... the sole evidence of the existence of these distant worlds ... that each of them is built up of molecules of the same kinds we… — James Clerk Maxwell Copy Share Image
![“In the heavens we discover [stars] by their light, and by their light alone ... the sole evidence of the existence of these distant worlds ... that each of them is built up of molecules of the same kinds we find on earth. A molecule of hydrogen, for example, whether in Sirius or in Arcturus…” quote by James Clerk Maxwell](https://sms4smile.com/quotes/img-quotes/0b3/james-clerk-maxwell-10636_archives_in-the-heavens-we-discover-stars-by-thei_1928846.jpg)