ESS
Grade-9
Easy

Question

hintHint:

1- stars,  2- 9.46 cross times1012,  3- Pole ,  4- Denser

    1. Stars are celestial bodies of the universe and constantly discharge heat and light.
    2.  Light year is equal to 9.46 cross times1012 km.
    3. Pole star looks to be stationary near the northern horizon.
    4. As the clouds of dust gets denser, it heats up and starts to emit light.

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