As the moon passes in front of the sun’s light, it casts a shadow on part of the Earth—and Earth-observing satellites can see this shadow.

Can a solar eclipse be seen from space?

Astronauts at the International Space Station got a glimpse of the only total solar eclipse of 2021, which was otherwise only visible to a few lucky observers in Antarctica. … The eclipse peaked at around 2:44 a.m. EST (0744 GMT) with two minutes of totality, during which the entire solar disk was shielded by the moon.

Can the whole Earth see a lunar eclipse?

Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth.