What Causes the ‘Northern Lights’ and How Far Can They Be Seen?

The northern lights are magical dancing lights in the sky caused by energy from the sun and Earth’s special magnetic field.

When the sun sends out a big burst of energy, like throwing a giant ball of sparkles, it travels all the way to Earth. This energy hits gas particles in our atmosphere, which are mostly oxygen and nitrogen. These gas particles get excited and start glowing, creating the shimmering lights we call the northern lights.

The northern lights can be seen from very far away, sometimes even thousands of miles! If you’re in a place with no light pollution, like a snowy mountain or a remote village, you might see them dancing above your head. But if you're in a big city with lots of bright lights, it's harder to see them because the city lights cover up the glowing show.

Sometimes you can even see the northern lights from space, astronauts have watched them twinkle like a giant aurora blanket around Earth!