Recently, some Facebook users saw the rocket icon appear in their applications and wondered what the symbol meant. This is the 2nd News Feed that contains videos, articles and other content that Facebook believes users will be interested in.
This feature is called Explore , completely different from the default News Feed . If the default News Feed is the place to update information, photos, share of friends or pages, groups that we follow, Explore will display information from strangers, groups, The page you are not following, but has the same content as the default News Feed.

However, this new feature is in beta on some accounts, if you're lucky enough, you'll see a rocket icon on the menu bar at the bottom of the Facebook for iOS app, top for Android. . Clicking on this icon will open the second News Feed.
Facebook updates this feature with the desire to help users have access to information they do not know, helping users save time searching and saving time and effort during use.
If you haven't seen the rocket icon in your Facebook app, try to wait a while longer!