Are You Out There?

What kinds of worlds exist beyond our solar system, and how do we find the habitable ones? Astronomers now have evidence of thousands of exoplanets, with new discoveries every year. As we search for life-giving worlds, we’re also confronted with a profound fact: whether the universe is teeming with life or we are truly alone, the reality will be mind-blowing. Together we’ll explore how scientists hunt for life elsewhere — and why some argue that, if intelligent civilizations exist, we should already know about them.