Hello, little star-explorer!

Stars are like tiny sparkly lights in the sky. They can be different sizes and different colours. Let’s learn why — with simple words and a fun activity.

1. What is a star?

A star is a huge, bright ball of hot gas. Our Sun is a star too! It looks big because it is very close to us.

2. Sizes: big and small

Some stars are very, very big. Some are smaller. Imagine toys:

• Big stars are like big beach balls.
• Small stars are like small marbles.

Even a "small" star is still much, much bigger than the Earth.

3. Colours: red, orange, yellow, white, blue

Stars can be different colours. The colour tells us how warm the star is:

• Blue or white stars are very hot — like a very hot stove.
• Yellow stars (like our Sun) are medium-hot — like a warm lamp.
• Orange or red stars are cooler than blue ones — like a warm cookie instead of a hot oven.

4. Easy example

Think of candles: a very hot candle might glow bright white; a cooler light might look more orange or red. Stars are like that, but much, much hotter than candles.

5. Fun activity you can try

1. Ask a grown-up for paper, crayons, and scissors.
2. Cut out a few star shapes in different sizes.
3. Colour some stars blue, some yellow, and some red or orange.
4. Talk about which stars are the hottest (blue) and which are cooler (red).

Safety note

Never look directly at the Sun — that can hurt your eyes. Look at stars at night instead, and ask a grown-up to help if you want to use binoculars or a telescope.

Have fun looking at the night sky and making your own colourful stars!