Facts About Stars

1) Why Are Polar Regions Called the lands of the Midnight Sun?

In most places on Earth, the Sun is visible during the daytime only.
But the polar regions are the only places on Earth where the Sun is visible throughout the day during summers.
That means there is no sunset or sunrise.

2) Why Does the Sun Rise in the Day and Disappear at Night?

As the Earth spins on its axis, only one-half receives sunlight at a time.
During this time, the other half of the Earth receives no sunlight; hence it's nighttime in the other half.
This phenomenon keeps repeating every 24 hours, leading to day and night.
When a part is facing towards the Sun, it is morning time there.

3) What Is a Solar Eclipse? What Happens to the Sun During a Solar Eclipse?

An eclipse is a celestial phenomenon.
During a solar eclipse, the Moon blocks the light from the Sun while moving around the Earth. The Moon comes in between the Sun and the Earth.
Due to this, Sun is not visible for a particular period of time.

4) What Makes the Sun So Hot and Bright?

The nuclear fusion reactions that constantly occur on the Sun make it hot and bright.
This phenomenon converts hydrogen into helium and leads to the production of an enormous amount of energy,

5) Is the Sun Yellow in Colour? Explain.

The sunlight, when it travels through the layers of gases in the atmosphere, gets scattered.
Only the yellow light reaches Earth and is visible to us, which makes the Sun appear yellow.
Instead, the Sun is white, which can be seen from space.

6) Why Knowing the Constellations Was Important During Old Times?

In the olden days, tracking stars' locations in the night sky was used to identify the directions.
This is now replaced by using a compass.