The universe’s first stars were dozens to hundreds times the mass of the Sun, similar in size to today’s supermassive stars. But these monsters died long ago — so far in the past, in fact, that astronomers cannot find them with their telescopes. Instead, scientists turn to computers to model the life cycles of these first stars and to learn how these behemoths’ short lives and explosive deaths impacted the environments around them.
Astronomy magazine subscribers can read the full article for free. Just make sure you're registered with the website.