2. With reference to ‘Auroras’ recently seen over Hanle (Ladakh), consider the following statements:
- An aurora is a natural phenomenon, characterised by a display of a natural-coloured (green, red, yellow, or white) light in the sky.
- These lights primarily appear near the poles of both the northern and southern hemispheres all year round.
- Auroras occur when charged particles from the sun collide with gases in Earth's atmosphere, producing colourful light displays near the polar regions.
- In the south, the display is called aurora borealis and in the north, it is called aurora australis.
How many of the above pairs are correctly matched?