how did astronomers use technology to identify characteristics of the crab nebula? technology that detects…

how did astronomers use technology to identify characteristics of the crab nebula? technology that detects ultraviolet light found hydrogen in the nebula technology that detects radio waves identified a pulsar at the center of the nebula technology that detects microwaves revealed the behavior of electrons in the nebula 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? technology that detects ultraviolet light found hydrogen in the nebula technology that detects radio waves identified a pulsar at the center of the nebula technology that detects microwaves revealed the behavior of electrons in the nebula technology that detects gamma rays measured the distance of the nebula from earth

Answer

Answer:

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

Brief Explanations:

Radio - wave detecting technology has been used to identify a pulsar in the Crab nebula's center. Other options are incorrect as ultraviolet light isn't mainly used to find hydrogen in this context, microwaves don't reveal electron behavior, and gamma - rays aren't used to measure nebula distance.