There are many more things we can learn using the Doppler Shift, and here is a summary of just a few: 1  We can measure the masses of binary stars, by detecting the velocity changes as they orbit around their common center of gravity, and combining these velocities with the period of the orbit.
Serendipity is when someone accidently finds something good. An example of serendipity is finding a twenty dollar bill in the pocket of a coat you haven't worn in awhile. YourDictionary definition and usage example.
I think these have a certain poetic beauty and richness about them, and the meanings are equally uplifting: 1  Effervescent - vivacious and enthusiastic. 2  Epiphany - sudden and striking realization. 3  Quintessential - most perfect example of a quality or class.  Serendipity - A sweet coincidence (see comment by Kundan Bhaduri)