A solar eclipse happens when the moon moves directly between the earth and the sun, blocking its light. “Depending on where you all are in the world, you get a different view of an eclipse; some places will have a partial eclipse, and some places will have a total eclipse. For scientists and astronomers, a solar eclipse presents a unique opportunity for further discovery. Gallagher is part of a team of scientists to fly a specially equipped Irish Air Corps aircraft off Ireland’s west coast during the solar eclipse. Total solar eclipse in Wyoming, USA in 2017.