NASA’s solar satellite just filmed a rare 'double eclipse'

Astronomers working with NASA’s Solar Dynamics Observatory (SDO) spacecraft have witnessed an unusal 'double eclipse', where both Earth and the Moon cross in front of the Sun at the same time. While Earth blocks SDO’s view of the Sun once a day during its semi-annual 'eclipse season', witnessing a double eclipse is remarkably rare, and the good news is that NASA has the pictures to prove it. "In the SDO data, you can tell Earth and the Moon’s shadows apart by their edges: Earth’s is fuzzy, while the Moon’s is sharp and distinct," the team explains. "This is because Earth’s atmosphere absorbs some of the Sun’s light, creating an ill-defined edge. On the other hand, the Moon has no atmosphere, producing a crisp horizon." More

(Source: ScienceAlert - Sep 11)