Facebook has added a new icon to some people's home screen – and not explained why it is there. Selected users are now seeing a small rocket at the bottom of their screen, without any clue about ...

The icon is only available on the mobile app. Here's everything to know about the new button. The new button looks like a tiny rocket ship. It's all gray in color and turns blue when selected.

A “rocket ship” icon has popped up in the ... but was using a different icon (a small square) at the time. That test was also limited to Android beta users, according to reports.