How big is the milky way?

2

Answers


  1. 0 Votes

    The Milky Way galaxy is composed of a massive disk.

    It is around 100,000 light years is diameter. One light year is equivalent to around 9.5 x 10^15 meters.

    It is around 1,000 light years in thickness.

    Its mass is 5.8 × 10^11 units of solar mass.

    Additional citations:

    http://en.wikipedia.org/wiki/Milky_Way#Size
    http://en.wikipedia.org/wiki/Solar_mass

  2. 0 Votes

    The Milky Way is approximately 100,000 light years in diameter, 1,000 light years thick, and has a mass of 5.8 x 10^11 solar mass. Estimates place the number of stars at between 100-400 billion.

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