TESS AAS Hyperwall Presentation January 2018
Animation of TESS's two phases while in orbit. During HASO--or high-altitude science operations--the spacecraft is farther from Earth and is capturing science data with its cameras. As it nears its closest approach to Earth, it switches to LAHO--low-altitude housekeeping operations--and rotates to transmit and recieve data from the ground.
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NASA's Goddard Space Flight Center. However, individual items should be credited as indicated above.