Astronomical means incredibly large, almost unimaginably huge. When scientists talk about astronomical distances in space, they're describing numbers so enormous that our everyday measuring tools fall short. The distance from Earth to the nearest star beyond our Sun is about 25 trillion miles, an astronomical distance that would take thousands of years to travel even in our fastest spacecraft.

The word comes from astronomy, the science of studying stars, planets, and space. Because the universe operates on such a massive scale, astronomical became our go-to word for anything extraordinarily large. You might hear about the astronomical cost of building a new stadium, meaning it costs billions of dollars. A video might get an astronomical number of views, perhaps hundreds of millions. Someone might owe an astronomical amount of money, far more than they could ever hope to repay.

Astronomical captures that sense of overwhelming scale, numbers so large they're hard to wrap your mind around. When your mom says the grocery bill was astronomical this week, she's exaggerating to emphasize just how expensive everything was. The word reminds us that sometimes, whether we're talking about space or spending, the numbers get so large they start to feel almost abstract.