Screen Rant

Captain Marvel rescued Iron Man in Avengers: Endgame... 1 / 7

And now the directors reveal how she found him. 2 / 7

After she returned to Earth following the snap... 3 / 7

She was able to track the Benatar using a homing beacon. 4 / 7

That's how she found Iron Man and Nebula in space. 5 / 7

This was a common explanation by fans... 6 / 7

So it's nice to know that this is actually how it happened. 7 / 7