See carnegiescience.edu/ErikHauri to donate to this fund. Image courtesy Steve Jacobsen, Northwestern University E R I K H A U R I Geochemist Erik Hauri, Who Found Lunar Water, Dies at 52 Carnegie geochemist at the Department of Terrestrial Magnetism, Erik Hauri, upended our understanding of the Moon’s formation. He died Wednesday, September 5, 2018, in North Potomac, MD, from cancer. He was 52. He was born April 25, 1966, in Waukegan, Illinois. Hauri worked tirelessly to understand how planetary processes affect the chemistry of the Earth, Moon, and other objects, and to understand the origin and evolution of planetary bodies. Hauri joined Carnegie as a staff scientist in 1994. He focused on water, believing that understanding its origin and distribution among the celestial bodies would help unravel the evolution of the Solar System. Scientists believed that the Moon was depleted in water because of its violent formation. In 2008, Hauri and team revealed that tiny beads of lunar volcanic glass collected during the Apollo missions contained water. They later found water in the lunar interior, and that the Moon’s mantle contained as much water as our own and that the lunar water supply originated from Earth. These results challenged long-held beliefs about the Moon’s formation. Today scientists are trying to reconcile a wet Moon with Moon formation theories. “Erik’s dedication to advancing the capabilities of modern instrumentation allowed him to disprove a 40-year-old assumption that the Moon contained no water,” said Richard Carlson, director of the Department of Terrestrial Magnetism. “His insight into these questions will be sorely missed.” Hauri, the first in his family to attend college, received a B.S. in geology and marine science with honors from the University of Miami in 1988 and a Ph.D. in geochemistry from the Massachusetts Institute of Technology and Woods Hole Oceanographic Institution in four years, 1992. He received numerous recognitions for his work. Hauri is survived by his wife, Tracy; his children, Kevin, Matthew, and Michaela; his father, Larry Hauri; sister, Stacy Mariano; brother, Roger Hauri; and their families. Hauri requested that in lieu of flowers, donations be made in support of the Merle A. Tuve Fellowship fund, which supports visiting scientists for short stays.  John A. Graham, Carnegie’s staff scientist emeritus of the Department of Terrestrial Magnetism, died of a brain tumor on Thursday, September 13, 2018, in his home in Washington, D.C. He was born on July 28, 1939, and went on to receive his Ph.D. from the Australian National University in 1964. Prior to joining Carnegie, he was an astronomer at the Cerro Tololo Inter-American Observatory in Chile. He was hired as staff scientist in Astronomy in 1985 and retired in April 2002. His research mostly focused on star formation in the Milky Way and in external galaxies. Graham was active in numerous astronomical societies over the years, including the American Astronomical Society, where he was vice president between 1984 and 1986 and secretary between 2003 and 2009. He was a long-time member, and a board director, of the Astronomical Society of the Pacific. Concurrent with his work at Carnegie, he served as a program director for the Division of Astronomical Sciences at the National Science Foundation from 2000 to 2001.  Staff Scientist Emeritus, Astronomer John Graham, Dies J o h n G raha m