The planets in our solar system don't actually align perfectly in the way that we often see depicted in illustrations or movies.

Here's why:

* Planetary orbits are not perfectly circular: They are elliptical, meaning the planets are sometimes closer to the Sun and sometimes further away.

* Planetary orbits are not in the same plane: The planets orbit the Sun at slightly different angles, so they are rarely in a perfectly straight line.

While planets can appear close together in the sky from Earth's perspective, a true alignment where all the planets line up in a perfect straight line is extremely rare and has never actually happened in recorded history.

However, there are times when several planets appear close together in the sky, which are considered planetary conjunctions. These conjunctions can be quite impressive and occur more frequently than perfect alignment.

For example:

* A conjunction of Jupiter and Saturn occurs every 20 years.

* A conjunction of Venus and Jupiter happens about once every 13 months.

So, while a perfect planetary alignment is not possible, we can still witness beautiful and impressive planetary conjunctions throughout the year.