☀️
🌟
💫
☀️ KNOW PRIMARY · AGES 6–11

PLANETS &
SPACE

☀️ From the Blazing Sun to the Frozen Outer Reaches — Our Cosmic Home!

📖 150 Topics 🆓 FREE + PRO ⏱️ 5 min per comic 🧠 Quiz included
☀️
4.6 BYA
Sun's Birth
→
🌟
EARLY STAR
Fusion Begins
→
💫
MAIN SEQUENCE
Stable Today
→
🔥
ACTIVITY
Solar Flares
→
⭐
FUTURE
5B Years Left
☀️ THE SUN: OUR STAR
TOPIC 02 · PLANETS & SPACE · 4.6 BILLION YEARS OLD
PAGE 1 OF 5 — BIRTH OF OUR STAR
OUR STAR IS BORN
A giant nebula cloud of gas and dust collapsing under gravity 4.6 billion years ago to form our solar system
4.6 BILLION YEARS AGO
Our Solar System began as a giant cloud of gas and dust floating in space. Gravity pulled everything inward, spinning faster and faster. The centre got hotter and hotter until...
⚡ DID YOU KNOW?
The Sun is still the same age as Earth - they were born at exactly the same time!
BOOM!
THE NEBULA
A swirling nebula cloud of gas being pulled inward by gravity
🌫️ A cloud of gas and dust
🌪️ Gravity pulls it inward
FUSION REACTION
Nuclear fusion: hydrogen atoms fusing into helium under extreme heat and pressure
🔥 Heat and pressure build
⚛️ Hydrogen fuses to helium
✦ FREE ACCOUNT ✦
LOG IN
TO READ
Free account unlocks Topics 1, 2 & 3 of all subjects.
No credit card — takes 10 seconds.
Continue with Google