Planets & Alien Project | Book Units Teacher

Inner Planets vs. Outer Planets

The eight planets fall into two clearly different groups separated by the asteroid belt. Understanding what distinguishes rocky inner planets from gas giant outer planets is the foundation for making sense of all the data that follows.

Working with Planet Data

Three sequential activities build from reading a table to creating one to organizing information into a foldable — scaffolding data literacy skills alongside planet content.

Planet check for understanding and reference card

Planet Reference Card & Check for Understanding

A reference card with key planet data pairs with structured comprehension questions — students practice reading scientific tables and drawing conclusions from the data.

Planet Flip Organizer

A layered flip organizer lists all eight planets with key facts on each flap — students build the organizer themselves, reinforcing the data through the act of writing and assembling it.

Comparing the Planets

Students analyze multiple data points across all eight planets and use the results to identify patterns — which planets are densest, which have the longest years, which are coldest.

Reference Charts — Galaxies, Asteroids & Comets

Beyond the eight planets, the solar system is home to millions of asteroids, comets, and other celestial bodies. These reference charts extend student data literacy to the wider universe, including galaxy and asteroid belt data.

Universe reference charts for galaxies, asteroids, and comets

The unit includes three data tables students use to find and interpret information about objects beyond our solar system:

Galaxies table — distances, sizes, and types
Asteroids table — size, composition, and location data
Comets table — orbital periods and discovery dates

Students practice Activities 1 and 2 (reading tables and creating their own) using this extended dataset, applying the same skills used with planet data to a broader set of celestial objects.

Creative Research Project

Create an Alien Project

The culminating project asks students to design an alien life form that could realistically survive on a planet of their choosing. Every design decision must be supported by actual planet data — atmospheric composition, temperature, gravity, and more.

What Makes This Project Work

Students can't just draw a fun alien — they have to justify every choice with science. If they choose Mars, they need to account for the thin atmosphere, extreme cold, and low gravity. Their alien's survival mechanisms, body structure, diet, and defense all flow from the data. It's genuine scientific reasoning disguised as a creative project.

Students select a planet and gather key survival data: temperature range, atmosphere, gravity, day length.
They complete the Alien Think Sheet, planning their alien's survival strategies before drawing.
Students design and draw their alien, writing explanations for each physical feature.
The finished project includes the planet data, think sheet, alien illustration, and written justifications.

Planets & the Alien Project