What observation method is necessary to see the supermassive black hole, Sagittarius A*, in the Milky Way's center?

Answer

Infrared observations

Visible light cannot penetrate the densest clouds toward the center of the Milky Way, but infrared observations can pierce this veil to reveal the supermassive black hole, Sagittarius A*.

What observation method is necessary to see the supermassive black hole, Sagittarius A*, in the Milky Way's center?
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