How are photos and videos chosen for Explore?
The Explore tab shows you photos and videos that you might like. We’re always working to update the types of posts you see in Explore to better tailor it to you. For example, we may show you photos and videos that people you follow have liked and/or posts that are liked by a large number of people in the Instagram community.
A notification will appear in your News tab if your post appears on Explore because it’s trending in the Instagram community. You'll also get a push notification if you have notifications turned on for Instagram.