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GS Geography Physical Geography of World
Q.

Masses-of-stars-and-galaxies-are-usually-expressed-in:
Explanation:

ANS.-(B)
The-solar-mass-is-used-to-indicate-the-masses-of-other-stars,-as-well-as-clusters,-nebulae-and-galaxies.-It-is-equal-to-the-mass-of-the-Sun,-about-two-nonillion-(two-quintillion-in-the-long-scale)-kilograms.-It-is-equal-to-approximately-1.99-×-1030-kilograms.

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