Episode 525: Active Galactic Nuclei

This episode contains: The three spoopiest hosts on this podcast enter the month of October being just... fine? Maybe overwhelmed? Ben was a groomsman for a fancy wedding (or at least a reception, it's a long story) this last weekend, and can we just pause to say how awesome it is that people can keep a friendship alive over decades? Steven's wife is going on a wild bachelorette party cruise and it sounds like A LOT. Meanwhile, we remember the best dog, Charlie, who Steven bid farewell to last Monday. Devon has been just doing his best, nothing to report. This week in space! AI helps distinguish dark matter from cosmic noise. Only... it doesn't yet? Dark matter, the invisible force holding the universe together, is a subject of intense research. It makes up around 85% of all matter and 27% of the universe's contents. Despite decades of research, the true nature of dark matter remains a mystery. Some scientists believe that dark matter particles may occasionally interact, a phenomenon known as self-interaction. Detecting these interactions would provide crucial insights into dark matter's properties. However, distinguishing between dark matter self-interactions and active galactic nuclei (AGN) feedback has been a challenge. Astronomer David Harvey has developed a deep-learning algorithm called Inception, which can untangle complex signals and differentiate between dark matter self-interactions and AGN feedback. Inception achieved an impressive accuracy of 80% under ideal conditions (as in, pre-generated image data, not real photos), indicating its adaptability and reliability for future dark matter research. This AI-based approach could significantly impact our understanding of dark matter and help scientists analyze massive amounts of data from space. Shadows searching in the night. Let Ben introduce you to Shade Map, a layer on top of Google Maps that lets you visualize shade anywhere in the world, down to the building level, at any date and time of day. It even lets you add buildings so you can visualize what a new construction project will do to the buildings and areas around it. There's a slider that lets you change the time, and the shadows update in real time. Ben recommends using this on desktop. Also, hat tip to Tom for letting us know about Steam and Valve's battle against arbitration fees. It's not a phase! Research reveals reality of Ice Age teen puberty. New research published in the Journal of Human Evolution reveals that Ice Age teens from 25,000 years ago went through similar puberty stages as modern-day adolescents. Researchers found evidence of puberty stages in the bones of 13 ancient humans between 10 and 20 years old. The study, led by University of Victoria paleoanthropologist April Nowell, found specific markers in the bones that allowed them to assess the progress of adolescence. The technique developed by lead author Mary Lewis from the University of Reading evaluates the mineralization of canines and maturation of bones to identify the stage of puberty reached by the individual at their time of death. The research helps to humanize these teens in a way that simply studying stone tools cannot. Researchers from six institutions collaborated internationally to develop this body of knowledge. This reminds Ben of Saffron teaching neanderthals Cockney slang in episode seven of the Time Bandits television show. Devon informs Ben that Time Bandits didn't get renewed, and the world became a darker place. Book Club: Next week, we'll be reading some classic horror with Edgar Allen Poe's The Pit and the Pendulum. Get in the spirit with this live performance of The Poet and the Pendulum by Nightwish, one of Devon's favorite songs by that band. This week, it's time to discuss The Remedy by Adam Haslett from the Dark Corners collection. It's so well written! Well, until the ending, that is. Spoiler alert: we did not like this one, so much so that we're going to take a break from these Amazon originals for at least a week. Oh, and find out what you call a werewolf with a YouTube channel.