151 Nova crystals.

"I think I need a seat." After reading about the first day, Blake knew he was about to read a long series of trials and failures.

"Huh?" When Blake flipped over to the next page he was shocked because the next entry was day 126.

[Day 126. Finally, the nova crystals have begun to show signs of stabilizing and all that is needed is time and observation.]

[Day 5324. The nova crystals have attained 50% stability, but that isn't only the good news if not I wouldn't have recorded it.

After some breakthroughs I had in the different departments of energy studies, I think I have figured out a way to make the nova crystals less susceptible to elemental instability. Also, I have a theory which if successful, could make the nova crystals twice as efficient!]

"It keeps on talking about these nova crystals but never says anything about its use." Blake thought aloud as he flipped to the next entry that blew his mind.