Scientist have created and maintained antimatter for the first time since last years attempt. They held the antimatter for 16 minutes and 40 seconds, breaking last years attempt which only held the particles for 172 milliseconds.
While not 40k related, this is exciting to bear witness to the future. Its not often we are around to witness advancements for all of mankind.
Is this science fiction turned reality? Antimatter typically goes boom when confronted with matter, hence why this is such an accomplishment. Instead of going into all the details, here are two links. One for physicist, and one for us.