NASA on Thursday released what it billed as the first portrait of Earth as seen from Mars. The colorized photograph shows Earth from 86 million miles away as a small blue dot orbited by its even smaller moon. The keen-eyed can make out clouds over the central and eastern United States and northern South America, as well as portions of Central America and the Gulf of Mexico, in a specially processed blowup of the image. NASA’s Mars Global Surveyor spacecraft took the picture while orbiting the Red Planet on May 8.