In this photo released by the Jet Propulsion Labor

WASHINGTON, : In this photo released by the Jet Propulsion Laboratory in Pasadena, California, 10 July, The Sojourner rover takes a photograph of the Martian landscape with the Mars Pathfinder in the bacground(L). The Sojourner began its study of the Martian rock dubbed Yogi. Scientist report that communications with Sojourner and the Mars Pathfinder are so good that data are moving three to six times faster than planned. AFP PHOTO/NASA (Photo credit should read AFP/AFP via Getty Images)