What is Aurora
Auroras, also known as the Northern and Southern Lights, are natural light displays in the Earth’s sky, predominantly seen in the high-latitude regions (around the Arctic and Antarctic). These vibrant displays of colors are caused by the interaction between the solar wind and the Earth’s magnetic field.
Composition of Auroras
- Auroras are created when charged particles from the solar wind collide with the Earth’s magnetic field and enter the atmosphere.
- These particles collide with atmospheric gases such as oxygen and nitrogen, causing them to emit light in different colors.
- The colors of auroras depend on the type of gas being excited and the altitude at which the collision occurs.
Appearance of Auroras
- Auroras typically appear as a greenish glow or a band of light in the night sky.
- They can also appear as a curtain of light that can dance and change shape.
- In some rare cases, auroras can appear as a red or yellow glow.
- Auroras are best viewed in areas with clear, dark skies and away from artificial lights.
- The best time to view auroras is during a solar storm or during the equinoxes when the sun is most active.
- Northern Lights can be seen in countries such as Norway, Finland, and Canada, while Southern Lights can be seen in Antarctica and the southern coast of New Zealand and Australia.