Thanks for the screenshot. There might some weird three.js/webgl thing going on, because that background is supposed to be black with stars. Any errors in the console? Just put out a potential fix.
webParams: {startingYear: 260, surfacePoints: Array(0), camera: {…}}
(warning) THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.
> Jb.loadTexture @ three.min.js:990
> createSphere…
lastAddressFailed true
(warning) THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.
> Jb.loadTexture @ three.min.js:990
> createClouds…