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If you look at the same object in different wavelengths of light,
you see different things. You're still looking at the same object, but different
wavelengths carry different information.
For example, the images below show the
galaxy Centaurus A in four different wavelengths of light. All the pictures show the
same galaxy at the same scale, but they all look totally different!
Visible |
 |
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Infrared |
Radio |
 |
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X-ray
(The square is just the area astronomers chose to view - the galaxy
is in the center)
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Different wavelengths of light show different things.
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