**Content: a Pioneer Plaque-like artifact with pictograms**

Real-world scientists and linguists have previously debated this.

Pictograms and reference to common physics/maths and elements would likely be a universal place to start, as used aboard the Pioneer space probes.

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/qkYTY.png

Whilst this is by no means a complete communication method, it is designed to show Humanity, our location, etc.

A Pictographic method using mathematics would, most likely, be the most language-independent method.