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How many planets have rings around them?

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Important Questions on Beyond Earth

MEDIUM

What is an artificial satellite? Name any two types of artificial satellite and state their functions.

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The pole star appears to be stationary when observed from the earth. This is because pole star is :
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Name the first artificial satellite sent by Russia in space.
HARD
What is the name of the natural satellite of the earth? How would have this natural satellite originated? Mention its two importance for earth.
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The earth takes 1 year to make a complete revolution around the sun whereas Pluto takes nearly 248 of our earth years to orbit the sun. What is the main reason for this?

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Write the name of Red Planet.
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Which is called Earth's satellite?
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Write any two characteristics of Jovian Planets.
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What is the name of 400 km thick bright layer around the sun?

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The planet nearest to the Sun is
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Write the name of the first astronaut. Which facilities are available to solve the problem of food and living in Weightlessness on International Space Station.
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Which of the following is not a natural satellite?

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Mention any two achievements of Hubble Telescope.

MEDIUM
What is a Solar System? Write the names of all the planets in our Solar System.
MEDIUM
Write the general characteristics of Jovian planets.
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What is the mass of the moon?
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Which satellite is used for geographical survey?

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Why do tail of comets formed, when it comes closer to sun?

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_____ is the smallest planet of our solar system.
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Which of the following is not a planet of the sun?