 Complete the following phrase:  Madhulika Lika Guhathakurta is an American Astrophysicist and scientist with NASAs Heliophysics Science Division. She was the lead program scientist for NASAs Living With a Star initiative and serves as program scientist on the Solar Dynamics Observatory SDO, Van Allen Probes, and Solar TErrestrial Relations Observatory STEREO missions. Lika was previously the program scientist on SPARTAN-201 Shuttle Point Autonomous Research Tool for Astronomy-201, a free-flying science instrument platform designed to study velocity and acceleration of the solar wind and observe the suns corona. These missions were conducted as part of the larger STS-56, STS-69, STS-77, STS-87, and STS-95 mission objectives. She has worked as an educator, scientist, mission designer, directed and managed science programs, and has built instruments for spacecraft. Dr. Guhathakurta is known for her work in heliophysics where she has authored over 70 publications on the subject. She served as the NASA Lead Scientist for the North American 