Question

what is the mass of our galaxy in kg. ?​

Answer 1

The Milky Way weighs 3,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 kgs.

Explanation:

• The Milky Way, our home galaxy, has been "accurately weighed" for the first time, and it's quite large. The biggest stumbling block has been "dark matter," which is a hypothetical matter that science says must exist but can't be seen physically. That's why prior estimations of the Milky Way's mass have ranged from 500 billion to three trillion solar masses (the mass of the sun).
• A single solar mass weighs 2 x 1030 kilogrammes (66 pounds), which is equivalent to 2,000,000,000,000,000,000,000,000,000,000 kilogrammes. The Milky Way, on the other hand, is 1.5 trillion times as massive, weighing 3,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 kgs.