Question

The total mass of all stars in Milky Way galaxy is about:

• A. $2\times {10}^{41}kg$
• B. $2\times {10}^{31}kg$
• C. $2\times {10}^{21}kg$
• D. $2\times {10}^{11}kg$

Answer 1

The correct option is A $2\times {10}^{41}kg$

Total mass of stars in the Milky Way galaxy is about $1.9\times {10}^{41}kg$

or $=2\times {10}^{41}kg$.