NASA is deploying a research aircraft to collect atmospheric and coronal data during a total solar eclipse on Wednesday, Aug. 12 [2].
This mission allows scientists to capture rare data on the Sun's corona and atmospheric effects that only become observable when the moon completely blocks the sun. Because these conditions are fleeting, aerial observation provides a unique vantage point to study solar physics and Earth's upper atmosphere.
The path of totality will cross the Northern Hemisphere, including parts of Greenland, Iceland, northern Russia, Spain, and Portugal [3]. Millions of people are expected to view the event [4]. At any given location within the path of totality, the total eclipse will last approximately 1.5 minutes [1].
NASA scientists are using the funded research aircraft to fly along this specific path. By maintaining a position within the shadow, the team can record high-resolution data on the corona, the outermost part of the Sun's atmosphere, which is normally hidden by the brighter solar disk.
While the path of totality remains outside the U.S., the data gathered will contribute to a broader understanding of solar activity. This activity can influence satellite communications and power grids on Earth.
The research team is focusing on the brief window of totality to measure changes in the ionosphere. These measurements help researchers understand how the sudden loss of solar radiation affects the Earth's atmospheric layers.
“The total eclipse will last approximately 1.5 minutes [1].”
This mission highlights the importance of opportunistic science, where rare celestial alignments are used to test hypotheses that cannot be explored through standard observation. By using an aircraft to chase the shadow, NASA can obtain a larger sample of atmospheric data than stationary ground observers, providing a more comprehensive map of how the solar corona interacts with the Earth's atmosphere.
