Let's try Googling baseball. Around half a billion results appear within half of a second.
How does Google gather information across the entire web so quickly? The first thing that happens is Google sends spiders to explore the web. This process is known as crawling. After the spiders retrieve information, Google can rank the webpages based on the content and their popularity to bring the best results each time a user searches something.
Now you might be wondering about these spiders crawling around on the web. Are they real spiders? Is the web even a real, physical place?