Black holes are thought to suck everything in, like cosmic vacuum cleaners. But they can also shoot out powerful jets of energy. These jets can be millions of light years long and carry a lot of power. Scientists have even come up with an explanation for how these jets get their energy. It's called the Blandford-Znajek process. Imagine black holes as nuclear power, both famously destructive and a source of energy. And just like in a nuclear reactor, these jets from black holes can be powerful. Scientists have seen these jets using telescopes, supporting their theories. If you want to learn more about black holes or have other questions about space, you can email us at shortwave@npr.org. You can listen to the Short Wave podcast on Spotify and Apple Podcasts. And if you want to support our work at NPR, you can sign up for Short Wave+. This episode was produced by Rachel Carlson, edited by Rebecca Ramirez, fact-checked by Tyler Jones, and engineered by Jimmy Keeley. So, next time you look up at the night sky, remember that black holes have more to them than just being cosmic vacuum cleaners.