Given That Astronomers Cannot See Our Milky Way Galaxy's from the Outside

question 100

Essay

Given that astronomers cannot see our Milky Way Galaxy's from the outside, how do they measure its rotation curve?

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Definitions:

Fine Adjustment Knob

The fine adjustment knob is part of a microscope used for making small adjustments to the focus, allowing for clearer visualization of the specimen at high magnifications.

High-Power Objective

A microscope lens typically with magnification of 40x to 100x, used for viewing fine details of a specimen.

Iris Diaphragm

A part of the microscope that adjusts the size of the aperture, controlling the amount of light passing through the specimen.

Stereomicroscope

A type of microscope designed for low magnification observation of a sample using light reflected from the surface of an object rather than transmitted through it.