|Water?||No, but aquatic towers can be placed on the blue stars.|
Ad Astra is a Intermediate difficulty track. The track takes an astronomical theme. The path starts at the top, which quickly splits into two paths until the end of the track, where it merges into one path again. From there, the Bloons exit at the bottom of the path. The Bloons travel across the outline of the huge star.
Aquatic towers can be placed on the blue stars. Land towers can be placed anywhere on the big star.
- Ad Astra is a German term, meaning "to the stars".