After it was discovered, Andalites made use of Zero-Space (Z-space). Because it exists beneath normal space and is subject to different metaphysical laws--the key one being distance--it serves a crucial role in faster-than-light travel and communications.
While Z-space travel has been effectively harnessed, Elfangor explains that it far from perfect. Z-space is subject to fluctuations, being described as something similar to weather or even a boat rising and falling with the waves. This sometimes requires travelers to compromise by returning to normal space at a point where, while nearer the intended destination, still requires a considerable trek. For example, when returning humans back to earth, the closest Z-space could bring them was a point near Saturn, which left three days of travel left to be made. Also, after contacting the Andalite Homeworld, Ax was informed that due to fluctuations in Z-space, it would be over a year before reinforcements could arrive.
When performing a lower-mass morph, the Andalite morphing technology relocates the user's remaining mass into Z-space, where it remains until being called upon again.
Andalites have made many different space ships, including fighters, the large Dome ships, and other ships.
Andalite fighters are as big as a school bus. The front end is a pod, shaped like an egg. Extending from the back of the pod there is a long, narrow shaft, with two crooked, stubby wings, and on the end of each wing is a long tube that glows bright blue on the back end. At the end, it has a sort of tail, resembling a raised Andalite's tail, that's curved up and foreward, and come to a point as sharp as a needle, which is where the [Shredder]] gun is located.
Dome ships are large ships shaped vaguely like a big mushroom or unbrella. The engines form a large pod at one, thought of as the roots. The long shaft is the bridge and sleeping quarters, while the dome of the ship is a large meadow-like area.
One of the more recently developed, and most advanced, Andalite technologies is the Escafil device, or morphing cube, or blue box, etc... This allows Andalites to "morph" into any animal by absorbing their DNA through touch. The only draw-back is the fact that they can only stay in morph for up to two Earth hours at a time. Passing the two-hour time limit carries the penalty of becoming a Nothlit, a person/Andalite trapped in morph forever. Tobias became a Nothlit in the first book. It is possible to force someone out of morph, by using Visser Three's Anti-morphing ray.
The Escafil device works by absorbing the animal's DNA and putting it in a small capsule, which is put into your bloodstream. When you morph, the DNA in the capsule replaces your DNA, turning you into that animal. If you morph an animal smaller than yourself, your body mass gets transported into Z-space, which puts you in danger, because, even though it's unlikely to happen, your body mass may be struck by a passing ship, which will disintegrate your body, or transport you to Z-space where you will suffocate, unless saved by a passing ship.
- Andalites all have microchips implanted in their brains which work to help them to learn and understand the languages of other extraterrestrials. The more the other entities speak, the more accurate and complete the translations become.
- They can also transmit thought-speak over long distance with a mirrorwave call.
- Andalite computer systems are so advanced that Ax mistook a new, state-of-the-art computer operating system Marco's father developed for a game in which one identifies the blaringly obvious and laughable fallacies in the program and fixes them.
- Andalite computers can be given commands through both manual input and telepathy.
- According to Ax, Andalites invented the computer before they invented the book.