# Everyone knows not to look at the sun. What about a gas giant?

I have an Earthlike moon orbiting a Saturnlike ringed planet at 1.8 million km. Neither the moon nor the giant are tidally locked.

How bright would Saturn appear to be in the sky? Would it hurt your eyes to look at, cause vision damage, or even be visible at all?

The star is a yellow dwarf comparable to the sun. The gas giant orbits at 150 million km. The albedo of the gas giant is 0.42 and the moon is basically Earth, in terms of size, atmosphere, and so on. I'm trying to determine how the gas giant would appear to humans living on the planet, what effects it would have, and in turn how it would be experienced from the surface.

• Logically, somewhat less bright than looking at the ground when the sun's overhead. Unless, that's blindingly bright - can you fill us in on details like that and the giant's albedo, sun's brightness, anything we'd need to know about the atmosphere of your moon, the colour-reflectance profile of the giant. I think it would help to tell us what you're aiming for, what're you trying to achieve? Mar 17 at 4:51
• The star is a yellow dwarf comparable to the sun. The gas giant orbits at 150 million km. The albedo of the gas giant is 0.42 and the moon is basically Earth, in terms of size, atmosphere, and so on. I'm trying to determine how the gas giant would appear to humans living on the planet, what effects it would have, and in turn how it would be experienced from the surface.
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Mar 17 at 4:55
• It appears that you might be seeking an explanation of albedo rather than presenting a worldbuilding problem, as far as I can tell. Could you clarify what you're after? Do you want it to be ridiculously bright, or not. How about heat during giant-up time? - Ridiculously hot? Mar 17 at 5:05
• Note however, the angle of your gas giant from the moon's observer point would be pretty huge, 10 degrees (flat, not square) or more, as it depends on the planet's radius, and also its rings, if compared to Saturn's, would take another 3 times more. The planet won't be too bright, that's for sure, but its reflected light would cause enough effects to not call night "night" while it's on the sky. Mar 18 at 12:21