People throughout Europe and parts of the U.S. will be treated to a chance to see a solar eclipse on Wednesday. NASA says northern parts of the United States, including from Alaska to North Carolina, will see a partial solar eclipse. During a partial solar eclipse, the moon passes between the sun and Earth, but the celestial bodies are not perfectly aligned. This will be the first solar eclipse visible from Spain's mainland since 1905, according to the European Space Agency. A total solar eclipse will be visible across parts of the contiguous U.S. on Aug. 23, 2044.