You have to prevent the starite from hitting the spikes, then fly over to it.
- Put an INVINCIBLE ROPE between the walls above the starite. Give Maxwell a JETPACK and fly over to the starite.
- Put an INDESTRUCTIBLE BRIDGE between the walls above the starite. Give Maxwell WINGS and fly over to the starite.
- Put an IMMORTAL CRATE just below the spikes. Give Maxwell a FLYING EARRING and fly over to the starite. If it gets stuck in the narrow part, use a FISHING ROD to get it out.