Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Violent supernovas ...

Deaths of nearby massive stars may have played a significant role in triggering at least two mass extinction events in Earth's history, according to new research. The explosive supernova deaths of ...

This certainly isn’t Jesus at his most pastoral. By pastoral, of course, I mean things like kindness, gentleness, speaking the truth but with care and words of comfort. A priest is pastoral, for ...

VATICAN, Holy See — The Vatican released the first photograph of Pope Francis on Sunday since his hospitalization over a month ago, showing the pontiff celebrating mass earlier in the day from ...