Don’t worry, guys. Carl is clearly a brachiosaurus, which lived during the Jurassic period. (And before anyone says our lil’ boy Steve is a velociraptor and therefore puts our comic in the late cretaceous, aka the time of the comet–that lil guy could easily be a compsognathus or a caudipteryx, both Jurassic-era species of small theropod dinosaurs. So the light getting bigger every night is going to pass by harmlessly, and Steve and Carl can go on enjoying the stars together until they die of old age, since Carl has very few natural predators at his size and I bet he’ll protect Steve, if he needs it (though small, fast and carnivorous as Steve is, he probably won’t).