Communication

"What if those are seeds or roots or something?"

"LC!"

"Just trying to prepare for the worst case scenario. Alien infestation while trapped in unknown space anomaly would just rank rather high with me."

Solomon enters the observatory. "You said it's sending out signals. Then maybe something like a repeater is inside."

"Look," LC and Solomon look over Lia's shoulder. The X-ray scope shows a segment of the spire, covered in white noise. She zooms in one increment at a time, revealing the source of the Rainstick's sound.

"A colony?"

"Infested by alien insect swarm? Possession by slimy elder gods with malicious intent?" They look at LC. "What? They're not both disgusting?"

"Then commune, linguist. Start with sonic frequencies."

A short while later, they find a regular signal pattern among the rain song.