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.
According to the Outer Banks Visitors Bureau, the Serendipity house (called The Inn at Rodanthe in the movie) still stands, although some sand has been pushed up to protect it. The home was threatened by ocean waves even when the film crew was shooting there in 2007.