Stars and Our Solar System – Maharashtra Board Class 8 Solutions for General Science (English Medium)
The spinning of planets around their axes is called the rotation of planets.
Venus rotates from East to West around itself unlike other planets which rotate from West to East.
Mars is called the Red Planet because it is rich in iron which makes it appear red.
We only see one side of the Moon because the period of revolution of the Moon is the same as the period of rotation of the Earth. Hence, only one side of the Moon faces the Earth.
Planets do not collide into one another because they revolve around the Sun in different orbits.
Saturn is said to have a unique characteristic because it has rings around it and its density is less than that of water.
The Earth rotates from West to East. Hence, the planets and the stars rise in the East and move across the sky and set in the West. So, we see the planets and stars moving from the East to the West.
We can watch a live cricket match at home through a system of communication satellites which transmits information at various places on the surface of the Earth.
- There are altogether 88 constellations. Of these, 37 belong to the northern hemisphere sky and 51 to the southern hemisphere sky.
- Jupiter has 63 moons.
- Aryabhatta was India’s first artificial satellite.
- It is because of artificial satellites that we can forecast the weather.
|a. Morning star||3. Venus|
|b. The Great Bear||4. Constellation|
|c. IRS||5. Artificial satellite|
|d. Asteroids||2. Between Mars and Jupiter|
|e. Halley’s comet||6. 76 years|
|f. Rotation of the moon||1. 27.3 days|