Early Tuesday morning, residents of Western Washington and much of the United States witnessed a rare astronomical event — a total lunar eclipse, commonly called a "blood moon." This happens when the Sun, Earth and Moon line up and our satellite passes through the darkest part of Earth's shadow. Although lunar eclipses occur about twice a year and are visible to more people than solar eclipses, total eclipses remain relatively uncommon events.
The next total lunar eclipse worldwide will not occur until late 2028, but Seattle residents will be out of luck — they won't be able to see it in full. Seattle will get a full "blood moon" spectacle only in 2029. Nevertheless, at the end of August this year, on the night of the 27th to the 28th, observers can catch an "almost" total lunar eclipse, which also promises to be an impressive sight for astronomy enthusiasts.
Based on: ‘Blood moon’ sails over sky as total lunar eclipse hits WA