The Great American Eclipse of 2017: A Recap and Lessons Learned
On August 21, 2017, one of the most anticipated astronomical events in recent history took place - a total solar eclipse visible across the continental United States. Dubbed "The Great American Eclipse", it was the first total solar eclipse visible coast-to-coast in the US in nearly a century. Millions of people flocked to the path of totality to witness this rare celestial event. Now, over 5 years later, it's worth looking back on that exciting day and reflecting on the experience. What did we learn? How did it impact science and society? Here's a recap of the Great American Eclipse of 2017 and some lessons learned.
The Path of Totality
The path of totality refers to the narrow track across the Earth's surface where the moon fully obscures the sun for a brief few minutes during a total solar eclipse. For the 2017 eclipse, the path of totality cut diagonally across the US from Oregon to South Carolina. Those lucky enough to be within this 70-mile wide path were treated to the spectacular sight of day turning to night and the sun's pearly white corona becoming visible around the black disk of the moon. Outside the path, a partial eclipse was visible.
Scientists and eclipse chasers had been planning for this event for years. The last coast-to-coast total solar eclipse visible from the US was in 1918. The 2017 eclipse was the first of the social media age, enabling real-time sharing of photos, videos, and reactions. The eclipse generated massive public interest, with towns and parks along the path of totality flooded with visitors. It was dubbed "The Great American Eclipse."
Impact on Science
For scientists, the eclipse was an exciting opportunity to make important observations. When the moon blocks the bright photosphere, the sun's faint outer atmosphere or corona becomes visible. Studying the corona provides insights into the sun's chemistry, cycles, and inner workings. Normally obscured, the briefly visible corona was intensely studied and imaged during the eclipse.
Citizen scientists also contributed through experiments and observations. Projects like Eclipse Megamovie stitched together images from over 1,000 volunteer photographers to create an expanded scientific record. Other observations helped study Earth's atmosphere and test Einstein's theory of relativity. The rare eclipse provided a valuable scientific bonanza.
Lessons in Preparedness
With massive crowds converging on the path of totality, the eclipse was also a lesson in emergency preparedness. Local and state agencies had to plan for traffic jams, crowded parking, water needs, sanitation, medical emergencies, and more. Most viewing areas were remote rural towns unaccustomed to such crowds.
Poor weather threatened to spoil eclipse plans in some areas. Cloudy skies blocked the view for many in Oregon and Nebraska. Other areas were socked in so viewers had to quickly relocate. Flexibility and backup plans were key. Traffic delays meant many eclipse viewers barely made it to viewing sites in time. Good preparation and early arrival proved essential.
The Next Great American Eclipse
While total solar eclipses occur about every 18 months somewhere on Earth, they are visible from any given location very infrequently. The continental US won't see another coast-to-coast total solar eclipse until 2045. However, an eclipse similar to 2017 will occur in 2024, with the path of totality crossing from Texas to Ohio and New England.
The Great American Eclipse united millions under a banner of science and astronomy. Despite some complications, it gave ordinary citizens a chance to experience the majestic beauty of a total solar eclipse and gain insights into our vast universe. Let's hope it also sparks wonder and enthusiasm for science, especially among children who may witness the next Great American Eclipse in their lifetimes. What an incredible opportunity to feel connected across time and space!