The 'darkness' of a rock out in space is called its albedo, which tells you how much light it reflects. It if has a really low albedo, it means the surface material doesn't reflect much of the sun's light, so it's difficult to see out in space. I'm assuming that's what DrMarcFries is referring to.
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The 'darkness' of a rock out in space is called its albedo, which tells you how much light it reflects. It if has a really low albedo, it means the surface material doesn't reflect much of the sun's light, so it's difficult to see out in space. I'm assuming that's what DrMarcFries is referring to.
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