The heroes obtain Aether Spark during the eleventh chapter of Darksiders Genesis. This page of our guide has solutions to the first few puzzles that must be solved using the Aether Spark.
To use Aether Spark to solve a puzzle, you need to stand in the right place.
The sphere you create can only move around a certain area - it can't touch the blue lines. In addition, the sphere accelerates with the distance traveled and it cannot stop.
Your task is to lead the sphere to the point marked in the screenshot above.
Move forward - you will reach the next puzzle. The point is on the right. To get to it, you need to move according to the lines creating the path.
The third point is exactly on the other side of the mountain on which you will stand. If you want the sphere to reach it, choose the longer path that stretches along the edge. Thus, you will avoid sudden turns.