It's impossible to have a true alignment of all eight planets plus Pluto. Here's why:

* Planetary Orbits: The planets in our solar system orbit the Sun at different speeds and on slightly tilted planes.

* No Perfect Alignment: While planets can appear close together in the sky from Earth's perspective (a phenomenon called a conjunction), they are never truly aligned in a straight line in space.

It's important to note:

* Planetary Conjunctions: Conjunctions of multiple planets are fairly rare, but they do happen. The next notable conjunction will be a close alignment of Jupiter and Saturn in 2040.

* Visual Alignments: From Earth's perspective, there can be apparent alignments where planets appear close together in the sky. These can be quite impressive, but again, they don't represent a true alignment in space.

Let me know if you'd like to learn more about planetary conjunctions or other celestial events!