What Makes the Sun Burn Without Oxygen?

The Sun burns at over 5,000°C — but there’s no oxygen in space… so how does it stay on fire? Here's the mind-blowing truth: the Sun doesn’t actually "burn" like fire on Earth. Instead, it produces energy through a process called nuclear fusion, smashing hydrogen atoms together to create helium and releasing massive amounts of energy. No oxygen needed! In this short video, we’ll break down how the Sun powers our solar system — without a single flame.