On August 12, a total solar eclipse plunged parts of Greenland, Iceland, and Spain into darkness, prompting NASA to deploy an extensive network of observers across the ground, air, and space to capture the phenomenon and study its atmospheric impacts.
Ground and Space Observations of the Corona
As the Moon crossed the path of the Sun, observers fortunate enough to experience clear skies witnessed the corona, the wispy outer atmosphere of the Sun. According to NASA, a NASA photographer stationed in Spain documented both the total eclipse and its preceding and succeeding partial phases until the Sun dipped below the horizon. Further north in Maine, where a partial eclipse was visible, a photographer captured the International Space Station and its crew of seven astronauts as it transited across the face of the partially eclipsed Sun. Meanwhile, a NASA astronaut aboard the station photographed the event from an orbital perspective roughly 250 miles above Earth.
Airborne Research Jets and Atmospheric Balloons
To extend their duration within the shadow, NASA pilots flew a WB-57F research jet at an altitude of 50,000 feet. The aircraft carried a specialized payload of cameras designed to capture high-resolution images of the corona and solar prominences—massive plumes of electrically charged gas erupting from the Sun—across various wavelengths of light. Concurrently, student teams participating in the NASA-funded Nationwide Eclipse Ballooning Project launched scientific payloads in Iceland and Spain. Although cloud cover obstructed visual observation from the ground in Iceland, the balloon-borne instruments successfully gathered data regarding how the sudden loss of solar radiation and heat altered the lower atmosphere.
Predictive Modeling and Data Comparison
Prior to the eclipse event, scientists at Predictive Science Inc. utilized computer simulations powered by supercomputers, alongside solar observations from NASA spacecraft and ground telescopes, to model the expected appearance of the corona. NASA reported that researchers later compared these computer predictions against composite imagery assembled from multiple photographs captured by the DEB Initiative project near León, Spain.
Frequently Asked Questions
When did the August solar eclipse occur?
According to NASA, the total solar eclipse took place on August 12, darkening skies over Greenland, Iceland, and Spain.
What altitude did NASA’s research aircraft fly during the eclipse?
NASA pilots flew the WB-57F research jet at an altitude of 50,000 feet to pass through the eclipse shadow and extend observation times.
What instruments were launched in Iceland and Spain?
Student teams launched scientific balloons carrying instruments to capture eclipse imagery and study lower atmosphere changes, part of the NASA-funded Nationwide Eclipse Ballooning Project.
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