THE CIRCADIAN CLOCK IN BOTH PLANTS AND ANIMALS IS AN IMPORTANT COMPONENT OF OVERALL FITNESS. PREVIOUS STUDIES OF GRAVITY RESPONSES IN OTHER SPECIES AND OUR PRELIMINARY ANALYSIS IN ARABIDOPSIS SUPPORTS A CONNECTION BETWEEN PLANT GRAVITY SENSING AND RESPONSES AND THE CIRCADIAN CLOCK. WE WILL UTILIZE THE RANDOM POSITIONING MACHINE (RPM) TO EXAMINE HOW THE INTERACTION BETWEEN THE CIRCADIAN CLOCK AND GRAVITY IS AFFECTED UNDER SIMULATED MICROGRAVITY.