No, stars cannot glow green.
While a star could theoretically have a peak light emission in the green part of the spectrum, the physics of stars prevents us from perceiving it as green. Here's why:
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Blackbody Radiation: Stars emit light due to their extremely high temperatures, a phenomenon called blackbody radiation. This means they emit light across a broad spectrum of colors, not just a single wavelength.
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Color Perception: Our eyes perceive color based on the combination of different wavelengths of light. A star whose peak emission is in the 'green' range also emits significant amounts of red, orange, yellow, blue, and violet light.
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Combination Effect: The combination of roughly equal amounts of all these colors results in us perceiving the star as white or slightly yellowish-white, not green.
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Necessity of Pure Green: For a star to appear green, it would have to emit almost exclusively green light. The physics of stellar processes simply doesn't allow for such a narrow emission spectrum. Stars that emit predominantly one color do not exist.
In short, even if a star's peak emission were in the green part of the spectrum, the simultaneous emission of other colors would wash out the green and make the star appear white or off-white to our eyes. Pure green light emission from a star is not physically possible.
