how did astronomers use technology to identify characteristics of the crab nebula?\no technology that…

how did astronomers use technology to identify characteristics of the crab nebula?\no technology that detects ultraviolet light found hydrogen in the nebula\no technology that detects radio waves identified a pulsar at the center of the nebula\no technology that detects microwaves revealed the behavior of electrons in the nebula\no technology that detects gamma rays measured the distance of the nebula from earth

how did astronomers use technology to identify characteristics of the crab nebula?\no technology that detects ultraviolet light found hydrogen in the nebula\no technology that detects radio waves identified a pulsar at the center of the nebula\no technology that detects microwaves revealed the behavior of electrons in the nebula\no technology that detects gamma rays measured the distance of the nebula from earth

Answer

Brief Explanations:

Astronomers use radio - wave detecting technology to identify pulsars. In the case of the Crab nebula, radio - wave detecting technology was used to identify a pulsar at its center. Ultraviolet light detection is not mainly used for finding hydrogen in this context. Microwave detection is not for revealing electron behavior in this way, and gamma - ray detection is not for measuring the nebula's distance from Earth.

Answer:

technology that detects radio waves identified a pulsar at the center of the nebula