What is Northern Lights(Aurora Borealis)?

            The Northern Lights, also known as the Aurora Borealis, are a natural light display that occurs in the Polar Regions, primarily in the Arctic and Antarctic. They are caused by the interaction between the Earth's magnetic field and charged particles from the sun, which are funnelled towards the poles. When these particles collide with gases in the Earth's atmosphere, such as oxygen and nitrogen, they release energy in the form of light. This creates the beautiful, colourful displays in the night sky, often seen in green, pink, purple, and red hues.

     

    The Northern Lights are most commonly visible in areas close to the magnetic pole, like northern Canada, Alaska, Scandinavia, and Russia. They're a stunning natural phenomenon! Have you ever seen them, or do you want to catch a glimpse someday?

    The Northern Lights (Aurora Borealis) happen when solar wind, which is a stream of charged particles released from the sun, reaches the Earth. These particles are made up of electrons and protons. When they collide with the gases in the Earth's atmosphere, such as oxygen and nitrogen, they excite these gas molecules, causing them to release photons of light. The colour of the light depends on the type of gas and its altitude:

• Green: This is the most common colour and is produced by oxygen molecules located about 60 to 150 miles above the Earth’s surface.
• Red: This colour appears at higher altitudes, typically above 150 miles, and is caused by oxygen molecules as well, but at much higher altitudes.
• Purple, blue, and pink: These are produced by nitrogen molecules, usually at lower altitudes.

The display typically happens in an oval-shaped region around the magnetic poles, known as the aurora oval. The phenomenon is stronger during solar maximum years when the sun is at the peak of its 11-year solar cycle, and solar activity is heightened.

The best places to witness the Northern Lights are in regions close to the magnetic poles, especially in winter when the nights are longest. Some of the best countries to catch the Northern Lights include:

• Norway (Tromsø, Lofoten Islands)
• Sweden (Abisko National Park)
• Finland (Rovaniemi)
• Iceland
• Canada (Yukon, Northwest Territories)
• Alaska (Fairbanks)

The auroras don’t happen every night, and their intensity can vary. Solar activity, the weather, and light pollution all play a role in how visible the lights are.