We can not surrvive on Pluto during day a walk.we shuld have keep tourch there during day Evan.that much dim sunlight meets to Pluto during day. So Pluto is comperitively low graviting in sun light and over all too.Now little bit in sub title that whole univariate how is taking sun light.Now we think of speed ,then at some speed ,we want run some object ,then we should have deside it's size first.Some how we want run some object at thousend miles per hour,then we can not deside it's size of just ant.We should have deside it's size a giant.So