title: Three.js less intense ambient light?
body: <p>I have a solar system simulator I'm working on in Three.js where the sun has a PointLight at its center with an intensity of 2.5. This looks great while the planets are facing the sun, but the rest of the planet is completely dark.  Is there any way I can add some kind of ambient light source that is less intense than the PointLight but bright enough to show some detail on the dark side of the planets?</p>
  
  <p><img src="https://i.stack.imgur.com/iW2Yo.png" alt="Dark side of planet"></p>