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    Age of the Nebula

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    The gas shell of a planetary nebula is expanding (away from the central star) at 20 km/s. The nebula currently has a diameter of 1 light year. What is the age of the planetary nebula(time since the gas was ejected)?

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    https://brainmass.com/physics/nebulae/age-nebula-29405

    Solution Preview

    This problem uses the basic formula relating velocity, distance and time
    v = d / t or, for this problem, t = d / v.

    What is moving in this problem is the outer layers of the ...

    Solution Summary

    This solution computes the age of the nebula.

    $2.19

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