A new discovery has been made that could help women using in vitro fertilization to become pregnant.

Fox News reports that researchers at Northwestern University discovered a 'flash of light' when sperm fertilize eggs in mice a few years ago, and that the same flash has now been seen in human fertilization. The flash of light is caused by a burst of zinc sparks that happens when sperm and egg meet. The researchers hope this flash of light will help them to identify healthier eggs for implantation during the in vitro process.

Some of the users in the comments section of the article think the flash of light is the soul entering the egg at the moment of conception. Let us know what you think of this discovery on Facebook.