Here's why:

* Size: The Big Dipper is much larger and contains brighter stars.

* Visibility: The Big Dipper is a recognizable asterism (a pattern of stars) that is visible in the northern hemisphere throughout most of the year. The Little Dipper, while containing Polaris (the North Star), is less distinct and fainter.

While the Little Dipper holds significance due to Polaris, the Big Dipper's sheer size and brightness make it a more noticeable and popular constellation.