Auroras
The Aurora Borealis, the Northern Lights, and the Aurora Australis, the Southern Lights, are a beautiful light show of red and green glowing overhead. They are caused by the interaction of solar materials with the Earth's atmosphere.

The Sun constantly emits a steady stream of electrically charged solar particles. When this "solar wind" reaches the Earth, these particles become trapped by the Earth's magnetic field and collide with the upper atmosphere, causing it to glow like a neon lamp. Most often, auroras are seen closer to Polar Regions as the Earth's magnetic fields direct more charged particles to these regions. Lower-latitude locations will often experience auroras during times when the Sun is more active.

Sun
The Sun is a yellow dwarf star at the centre of our solar system. It accounts for 99.8% of our solar system's mass. If the Sun were a hollow sphere, one million Earths could fit inside it!

The Sun is roughly 4.6 billion years old, about halfway through its expected life cycle. It will spend its latter years as a red giant, eventually expanding well beyond the orbit of Venus. Later still, it will eject part of its material back into space. The remainder will collapse into a tiny white dwarf star, half the Sun's mass and about the size of Earth. It will then slowly cool and fade into invisibility.