When an astronaut on the moon sees an eclipse of the sun by the earth? What does an earthly observer see at this time?

A solar eclipse is observed on the Moon when the Earth stands between the Sun and the Moon (along the line of centers). At the same time, a total lunar eclipse is observed on Earth.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.