Into the Crater

The wave pulled all the Spark with it, and the top of it curved so that Spark didn't fly off. From the direction the Spark moved in, it was clear that they wanted to fill this crater with all the Spark that was in this asteroid.

But there were still things here that made Ning wonder how they were going to gather Spark exactly.

After all, regardless of how much Spark they gathered, there was no gravity to keep it in the crater.

An asteroid of this size was much too small for the gravity on it to be of any note at all. The only reason they weren't being dragged into the Krimanax at the moment was because… well, they were.

They were falling into Krimanax at the moment, but the falling was happening in a way where they simply missed Krimanax. They fell and they missed.

Which was to say that they were in orbit around the planet and were experiencing weightlessness. They were affected by Krimanax's gravity, but they weren't influenced by it.