Once Billy left the planet, he activated Mana Shield to protect him from the cold and radiation. Fortunately, the shield wasn't consuming too much mana, but he wouldn't be able to keep it up forever. He tried to check if he could feel the energy in space, but there wasn't… he had to find another way.
"I should have ready my armor for this kind of situation…" Billy thought and then used the remaining mana of the armor to increase his speed as much as possible.