Last updated on 12 May 2026
After Stéllarium the formidable Virtual Planetarium I was talking about a few days ago, I suggest you stay the head in the stars and discover through a site quite incredible our solar system. If the moon was just a pixel, it is the title of this beautiful site that invites you to discover the solar system.
This tool offers a solar system-wide representation, where the Moon is represented by a single pixel. The aim is to give a realistic idea of the huge distances between planets and the vastness of space. Watch out for takeoff.
Understanding the scale of the solar system
The notion of scale in the context of Solar System is essential to apprehend the vastness of our universe. When speaking of scale, reference is made to the relationship between the different dimensions and distances of celestial bodies. In the case of our solar system, these dimensions vary enormously, sometimes making it difficult to visualize how big all this is.
A pixel, an entire journey or how to visualise the vastness of the solar system
Have you ever tried to represent the solar system to your students, but are you struggling to make them understand the astronomical distances between planets? "If the moon was just a pixel" takes up the challenge in an ingenious way through a free and interactive site where the Moon is represented by the size of a pixel.
It is also the starting point of this virtual journey. It is easy to use:
Mouse navigation
- Use the mouse wheel or scroll horizontally to "travel" through the solar system.
- Scrolling takes you through vast expanses of empty space between planets.
Discovery of the planets
- As you progress, you will encounter the different planets of the solar system.
- Of information about each planet appear when you reach them through detailed factsheets.
Scale and distances
- The tool highlights the huge distances between planets.
- For example, it takes about 7 months to reach Mars with a current spacecraft.
Exploring the classroom space
Integrate this site into your science courses. Organize group explorations, where each student searches for information about a planet. Launch debates on the immensity of space and the interstellar void. Imagine a creative writing workshop: "If I were an astronaut traveling to Mars …
The tool offers a unique visual experience to understand:
- The actual proportions of the solar system
- The importance of vacuum in space
- The challenges of representing and understanding large scales
In the same vein, I also invite you to discover this beautiful educational video that takes up the idea of making the immensity of the solar system palpable.
"If the Moon was just a pixel" is a valuable tool. It concretises the abstract, making the spatial distances palpable. The playful and interactive aspect stimulates students’ curiosity, fostering learning.
In summary: If the moon was just a pixel is a completely free educational tool that allows to to represent the true dimension of the solar system in a concrete way. It offers several benefits for teachers and students, including visualising astronomical distances and inviting reflection on scale and space vacuum.
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