The Download: understanding dark matter, and AI jailbreak protection

We can put a good figure on how much we know about the universe: 5%. That's how much of what's floating about in the cosmos is ordinary matter--planets and stars and galaxies and the dust and gas between them. The other 95% is dark matter and dark energy, two mysterious entities aptly named for our inability to shed light on their true nature. Previous work has begun pulling apart these dueling forces, but dark matter and dark energy remain shrouded in a blanket of questions--critically, what exactly are they? Enter the Vera C. Rubin Observatory, one of our 10 breakthrough technologies for 2025.