Now you’re thinking with portals

There are a few big jumps to make in the next area. You’ll eventually get to a room with enormous pillars. Look down and to the left for the platform you need to move on. Follow the path across the pillars till you get to a series of boosters. Follow them all the way up. Maya will start texting you when you reach the top of the area, just before you reach a room where you can sit back, relax, and watch the Shadow Legion get merked by the Vex. When there’s nary a big galoot in sight, take down the Vex, and you can move into the next room full of greenery which will have one of those Planetary Pistons you can hit with a hammer to unlock some Radiolite to collect.
When you’re done mining, take the booster to the next floor up, kill the enemies here too. In the back of the room, you’ll be introduced to the third and final module container: a blue one labeled “ACCESS”. To answer your next question, grab the blue module in the room off to the right. Stick it in the blue container. The blue ones, apparently, open Vex portals. Neat. Walk on through the one you just opened. You’ll be surrounded by Vex, including a Hydra on the other side of the room. The cover in this place is pretty thin, but use it the best you can to clear the room.

Once you’re recovered, grab the blue module the Hydra dropped, put it in the container a few feet away. Grab the green module nearby, and go through the portal. Drop the module in the container on the right to create a new platform which apparently needs a blue module. Go back through the portal, grab the blue module from here, kill the Vex that have probably respawned by now, and go around the left-hand curve of the room to the other portal. Use the blue module here, and go through. You’ll be back in the room with the first blue module. Grab it from its container, go back through the active portal. Use the blue module you’re carrying in the container across the room, then grab the other one, go through the portal, and use the second module here. Step on through.