Hi all! Meet Axini (right), the tinisymmetric partner of the axion, and Sterlini (left), the tinisymmetric partner of the sterile neutrino! They're both dark matter candidates, which makes them the dark matter sisters! Sometimes they squabble over who's the real dark matter candidate, until I come in and remind them about Self-Interacting Dark Matter and that dark matter might be a few different particles, and then they make up and are friends again 😊 These cuties are new, about 2 months old, so getting to know them will take some time. But, I have a bit of that now! Also, HI EVERYONE I'M BACK! 😀 #hamster #Axini #Sterlini #roborovskihamster #hamstersisters #hamstersofinstagram #robosofinstagram (at Irvine, California)