"Moons do that!"

"And then they shrink!"

"And then they grow some more!"

"Forever and ever and ever and ever and ever and ever."

"Until the sun explodes," says Helen.

"Explodes? Why would the sun explode?"

"Suns aren't immortal! They live a really really really really long time, and then they go boom," says Helen. "I learned that the other day."

"Going boom is a funny way to die," snorts Shura.

"Not if you're a star!"

"I guess! Why do they do it like that?"

She shrugs. "I dunno!"

"Oh. Do moons die?"

"I don't think they die the same way," Helen says consideringly. "But I dunno if they do at all."

"Do any other things besides stars die by exploding?"

"I'm not sure! I wonder how to find out," she muses. "Maybe my spinach would know."

"Maybe. Should we ask him?"

"I dunno, button," he laughs. "Maybe galaxies or something."

"He says he doesn't know but maybe galaxies or something," Helen reports.

"Galaxies are made of stars," says Shura. "I know that."

"So maybe a galaxy dies when all of its stars explode," muses Helen. "I wonder if it happens all at once or one by one?"

"Dunno. I didn't know they did it at all."

"Now you are better educated," giggles Helen.

"And I didn't have to do any boring things!"

"That's the best kind of education! The kind that isn't boring!"