The Aqua Glow version glows in the dark and is UV reactive providing an amazing light show under a black light. Each liquid-filled ball features a soft outer shell that serves as a flexible casing for the liquid, allowing for an easy, comfortable grip. Rather than a central metal weight such as standard Astrojax, the dynamics of the Aqua's fluid flows lower the rotational inertia of the balls to provide smooth orbits and prevent tangling of the string around the center ball. The string length is adjustable and stringbuds at each end of the string allow for quick and easy tuning. Launch date: November 26, 2007.
— Astrojax are hot items at Moon Rabbit Toys in Santa Fe, N.M., according to Owner Shana Hack in early summer 2009.