# singularity and black holes

**URL:** <https://boards.straightdope.com/t/singularity-and-black-holes/700980>\
**Category:** Cecil's Columns/Staff Reports\
**Created:** [October 10, 2014, 4:27pm UTC](https://boards.straightdope.com/t/singularity-and-black-holes/700980 "2014-10-10T16:27:13Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\
**Post date:** [October 15, 2014, 7:07pm UTC](https://boards.straightdope.com/t/singularity-and-black-holes/700980/21 "2014-10-15T19:07:45Z")

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As long as it’s spherically symmetric (which it is, near enough), you can treat it as a point from anywhere outside. So the distance from which it would exert a field of 1/2 g would be sqrt(2) times the Earth’s actual radius.

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