A space game that makes giant numbers feel small

What your child learns

Space is full of giant numbers. The Sun alone is about 93 million miles away. So the game teaches space mostly through order and comparison: first, next, last, bigger and smaller.

Children meet the Sun and the eight planets, then put them in order from Mercury to Neptune. They compare sizes, with Earth as a tennis ball. On rocket trips they learn that some journeys take days and others take years.

Along the way come the big ideas. The Sun is a star. There is no air in space. The Moon shines because the Sun lights it up.

• The eight planets in order from the Sun
• Comparing sizes with balls children know
• Time words: days, months and years
• Why astronauts need a helmet, a suit and an air tank
• Space words: star, planet, astronaut and comet

Why we made this game

Children ask space questions that sound simple and are not. How far away is the Moon? Which planet is the biggest? Can I go there? We wanted honest answers in words a four-year-old can hold on to.

So the game uses a measuring stick children already know. If Earth were a tennis ball, the Moon would be a marble and Jupiter a big beach ball. The Sun would be as tall as a house. A note on screen says that the pictures are not to scale, so nobody is misled.

We also made your child the hero. They become the captain of the rocket, and a little astronaut rides along in its window.

What children love about it

Putting the planets in order is a satisfying puzzle. Children drag each planet to its circle, or simply tap them in turn. The game asks which planet comes next and cheers at every step, all the way out to Neptune.

The rocket trip is the big moment. Children pick a planet, hear the countdown and lift off. The Moon takes about three days. Neptune takes about twelve years, longer than your child has been alive.

Packing for space is pure fun. The helmet, suit and air tank are right. The umbrella, flip-flops and beach ball are not, and each wrong choice comes with a funny reason. A kite needs wind, and there is no wind in space.

The quiz ends with a launch. Every right answer is a tank of fuel for the rocket. With all ten right, it flies past every planet and out to the stars.

How to play it together

Step outside on a clear evening. Look for the Moon together and ask where its light comes from. Then tell your child that every star they see is a sun, very far away.

Use real balls to compare sizes. Line up a marble, a ping-pong ball, a tennis ball and a beach ball, and let your child decide which one is Earth. For the Sun, point at your house.

Repeat the one safety rule the game gives: never look straight at the Sun. It is a good rule to say out loud on every sunny day.

Afterward, ask your child to teach you the planet order. Saying it out loud to you is one more round of practice.