A couple weeks ago, we talked about gravitational lensing, and how it's used to find black holes. When the earth, a black hole, and a galaxy are lined up just right, a black hole bends light around itself the same way a lens bends light to form an image.
Well, this technique can also be used to find dark matter, as described in a recent article on phys.org.
Want to learn more about dark matter? Be sure to join us at today's Society of Physics Students meeting (12:15, PENT 125) for a TED talk video about dark matter. Hope to see you there!
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