It's another Destiny 2 treasure hunt, although this time around we're hunting shards of calcified light. You'll need them for growth research, to get your hands on the new exotic trace rifle, the Ruinous Effigy.
You can therefore find on Io, Titan, Mars and Mercury. There are five of them on each planet and your ghost will show you where to go if you just keep it. You can use the embedded videos below to show you how to get to each of the five shards on each planet. Some of them are in awkward and hard-to-reach places, so a video will be much more useful than just a map of the location. Of course, we've also included a map showing where everyone can be found.
Io
This guide is currently under construction.