In case of alien invasion, don't worry, the United Nations got your back. They have the United Nations Office for Outer Space Affairs. And yes, it's a thing where people around the globe gather and discuss not only about aliens but also current state programs searching for aliens. Here's the link for the office where you'll find lots of presentations that goes from Progress made by satellites, climate change¹ to cyber protection for space technology.

In June they had their latest session, so, feel free to check their documents and progress. Find if your country is member of this office.