Image Credits

	Banner image, "Earth from Space" is reproduced courtesy of the Image Science and Analysis Laboratory, NASA-Johnson Space Center Photo #: AS11-44-6548 Date: Jul. 1969 Geographic Region: Feature: LUNAR LIMB, EARTHRISE
	Black Hole image, is reproduced courtesy of the Space Telescope Science Institute and NASA.
	"Big Bang" image "sparkler-fire" is reproduced by permission from bigfoto.com.
	The Feynman diagram image (here shown as a negative), created by John Barrett, is reproduced with permission from the American Mathematical Society.