Rosine Lallement is a French researcher at the Paris Observatory and a foreign member of the U.S. National Academy of Sciences.[1] [2] Lallement studies the heliosphere and interstellar medium.[3] In her research, she has helped demonstrate that the motion of the interstellar cloud outside the heliosphere is identical to that of interstellar helium inside the heliosphere. She is a member of the IAU.[4]