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Black Holes

Try this!

Do not use any commas in your answers! To make the Earth into a black hole, it would have to be squeezed down to a radius of 0.86 centimeters, about one-half the size of a golf ball.

  1. Using the following equation, confirm the radius of the black hole for the mass of the Earth.

    R = 2MG/c2

    where Me = 5.8 x 1027g, G = 6.67 x 10-8cm3/g/sec2, and c = 3 x 1010cm/sec.

  2. g

  3. cm


This activity was developed by Jacqueline Slay, Largo High School, Largo, MD

Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

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