As James Gunn's Superman (2025) races into cinemas faster than a speeding bullet, we look at the planet that could have hosted his home world and why he might be older than he looks.
The search for dark matter requires all of the best models, theories, and ideas we can throw at it. A new paper from Julia Monika Koulen, Stefano Profumo, and Nolan Smyth from the University of California at Santa Cruz (UCSC) tackles the sizes and abundance of one of the more interesting dark matter candidates - primordial black holes (PBHs).