A key component of the world's biggest machine has just been upgraded. One of the experiments in the Large Hadron Collider, which lies deep underground on the French-Swiss border, now has a much better 'pixel tracker'.
The LHC works by firing two beams of particles together at near the speed of light. When these beams smash into each other, scientists study the resulting debris to find evidence for new subatomic particles. The improved tracker will give much clearer 3D pictures of the aftermath of the collisions.
I can't wait to see what the scientists will discover with the upgrade.