Have you ever wondered exactly how many candles are on the universe's birthday cake? For decades, it was one of science's biggest arguments. Today, thanks to "baby pictures" of the cosmos and ancient stellar clocks, the mystery is finally being solved. Join us as we go on a 13.8-billion-year detective hunt—from the coldest spots in the deep south to the newest images from the James Webb Space Telescope—to find out where we truly fit in the timeline of existence.