What would the Sun look like from Pluto?
At about 30 times further, the Sun would be quite tiny. The Sun is about 30 arc minutes across (or 1/2 degree of arc) from Earth distance. Pluto’s orbit varies, but if we use the 30 AU number, that would be about 2 minutes - bigger than a point, but it would be a tiny dot in the sky - very bright, just as bright as from Earth, just 900 times smaller, so it would shine 900 times less light, which, surprisingly is about the light at dawn, prior to sunrise. Pluto’s days aren’t dark, they’re kind of dusk or dawn brightness, almost bright enough to read, in fact, people with good eyes could probably read at Pluto brightness.
More on Pluto brightness here:
NASA Lets You Experience “Pluto Time” with New Custom Tool
It’s always Pluto Time somewhere, and NASA wants to see your view, using a new interactive widget that provides the approximate time, based on your location.
2 arc seconds would make it appear about twice the diameter of Venus in the sky, when Venus is the morning or evening star, or about the size of Venus when Venus is in transit, which you shouldn’t look at with the naked eye. That gives you an idea of the size of the Sun from Pluto.
So, a tiny dot shinning all that light, if you looked at the Sun from Pluto you’d almost certainly damage your eyes, and see a tiny dot would remain in your sight where you looked at the sun. Small, but still too bright to look at, especially since Pluto has no atmosphere to filter out the UV and some of the visible light.
