The splendor of a solar eclipse is unique to our world — nowhere else in the solar system does a planet's moon so perfectly block the light of the sun. The fast and fleeting darkness of those events affects many things on Earth, including animal behavior and waves in the ionosphere.
Researchers have now found that cumulus cloud cover fell by more than a factor of 4, on average, as the moon's shadow passed over Earth during a recent annular eclipse.
