Explanation

The poles experience six months of the day and six months of the night.

This is since earth is tilted on its axis.

Also, due to this, each pole is tilted towards and away from the sun for about six months.

When the North Pole is tilted towards the sun, it has continuous daylight.

Explanation

The speed of light is much faster than the speed of sound in air.

Light travels 186 thousand miles in 1 second.

While sound takes almost 5 seconds to travel 1 mile.

Explanation

Without sunlight, there would be no scattering of light by the Earth's atmosphere.

This means that no scattered light would reach our eyes, and the sky would appear black.

Explanation

• Venus, often called the "Evening Star" or "Morning Star," appears in the western sky after sunset.
• Venus is the brightest planet.
• It has an atmosphere but no moons.
• It's identical in size, chemistry and gravity.
• It has volcanoes, mountains and sand.
• It's also called Sister Planet of the Earth.

Explanation

Celestial bodies that do not have their own heat and light are known as planets. Planets are lit by the light of stars, such as our sun.

Stars: Celestial bodies that emit their own light.

Asteroids: Tiny bodies that move around the sun, found between the orbits of Mars and Jupiter.

Comets: Bodies in space that are seen by reflected light.

Explanation

Mercury is the only planet without any kind of atmosphere

It's the first planet from the Sun 

It is a rocky planet with a trace atmosphere

 It is the smallest planet in the Solar System, with an equatorial radius of 2,439.7 kilometres (1,516.0 mi).

Mercury consists of approximately 70% metallic and 30% silicate material.

Explanation

Phases of the moon occur because we can see only that part of the moon which reflects light towards us.

The changing shape of the bright part of the Moon that we see is called its phase.

The moon is illuminated because it reflects the light from the sun.

The part of the moon facing the sun is lit up.

The part facing away from the sun is in darkness.

Explanation

The Earth is the fifth largest planet in the solar system. 

The order of the planets by size is:

1. Jupiter (largest)
2. Saturn
3. Uranus
4. Neptune
5. Earth
6. Venus
7. Mars
8. Mercury (smallest)

Explanation

The constellation of seven bright stars known as the Great Bear is Ursa Major, which also includes the Big Dipper asterism: 

Name:

The Latin name Ursa Major means "greater (or larger) bear". 

Size:

Ursa Major is the third-largest constellation in the sky and the largest in the Northern Hemisphere

Explanation