The red supergiant star, Betelgeuse. It's speculated to soon be going to or have already undergone a core collapse supernova but the light of the explosion hasn't yet reached us. It will shine as bright as a full moon for a year when its light reaches Earth, casting its own shadows even. The radius of the supernova is just out of harm's reach, but wild animals tend to use the moon to help them navigate at night, and scientists are concerned that wildlife all over the globe may confuse this supernova with the moon, potentially disrupting the ecosystem.