There is one star in this area. You may find hints to its location below.
[Spoiler] General area:Look in the areas around barred gates. One is very slightly different. Try looking around there.
[Spoiler] Area:Okay, this one is rather cheap. Just before Only the Two Of Us there is a gate. Look around the side of the gate to find the switch.
[Spoiler] Tool:Ah, but now you need to get rid of that energy wall. If only you had a jammer...
[Spoiler] Breaking it down:Go back to where you first learned about jammers, and probably died. Look for a ladder and climb over it. Here's the jammer, and the other one's around the corner! Now you just need to get that jammer over to the star, using the tools you've learned.