potree

Indeed https://github.com/potree/potree has a bit awkward navigation, but there are quite a few nice lidar datasets available to explore with it, like the scan of the Matterhorn. I once used it to explore a dataset made by a photogrammetry drone, was quite nice. The entire country of the Netherlands is also available here: http://ahn2.pointclouds.nl/ There is no rgb information, only elevation. But you can make out individual power powerlines, the scan resolution is really high.

Very nice! A small nity-picky: From academic point of view if I was a reviewer I would point out that the Potree project is prior art in rendering points in browser, considering Octree based spatial distribution of points for rendering of arbitrarily large data sets. Potree is designed mainly for pointclouds of terran objects while this is obvioulsy intended for astronomic datasets so the domain is a bit different. https://github.com/potree/potree https://www.cg.tuwien.ac.at/research/publications/2016/SCHUE...

It's pure pointcloud rendering. See https://github.com/potree/potree