Question

B. Fill in the blanks.
1
The vast limitless space which includes all celestial bodies is called_________
2. The distance between celestial bodies is measured in a unit called_________
3.
______ always indicates the north direction.
4. All the planets of our solar system revolve round the Sun in their fixed paths called_________
5.
_________is the third nearest planet to the Sun.​

Answer 1

Explanation:

1. galaxy

2. light year

3. compass

4. orbit

5.earth

Answer 2

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here is the answer...

1.Universe

we cannot see all of them. The vast limitless space which includes all celestial bodies is called Universe.

2.the distance between celestial bodies measured in PARSEC. A parsec is the distance at which 1 AU subtends and angle of 1 arcsec.

3.A compass always points towards the North-South direction. The arrow of the compass needle indicates its North pole. The arrow always points in the North direction.

4.All the planets of the solar system - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune move around the sun in a fixed elongated path. The paths are also called the 'orbits' and all the planets moving along its orbit.

5.Earth

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