The Large Hadron Collider is the world's largest and most powerful particle accelerator, propelling charged particles to high speeds and smashing them together in the name of science. It also might be a time machine.
The world's most powerful particle accelerator smashed together lead nuclei at the highest energies possible, creating dense sub-atomic particles that reach temperatures of over ten trillion degrees. Beyond being awesome, this achievement shows the early universe was actually a liquid.
Move over protons, now there's something meatier. Scientists working on the Large Hadron Collider at the European Organization for Nuclear Research near Geneva, Switzerland have swapped out protons for electron-stripped lead atoms. Why? To see the beginning of the universe.