Why is "Push broom scanner" trending?

Wikipedia Overview

A push broom scanner, also known as an along-track scanner, is a moving array of spectroscopic sensors used to obtain an image. The name "push-broom" references how the sensors 'sweep' out an area similar to how a floor broom is pushed forward to clean an area. The scanners are regularly used for passive remote sensing from space, and in spectral analysis on production lines, for example with near-infrared spectroscopy used to identify contaminated food and feed. The moving scanner line in a traditional photocopier is also a familiar, everyday example of a push broom scanner. Push broom scanners and the whisk broom scanners variant are often contrasted with staring arrays, which image objects without scanning, and are more familiar to most people.