A tudent made the following obervation about atronomical bodie. Obervation 1: Mar revere it direction of motion in the night' ky. Obervation 2: The tar move acro the ky. Which obervation() can be explained uing the heliocentric model but not the geocentric model?
Only obervation 1
Only obervation 2
Both obervation 1 and obervation 2
Neither obervation 1 nor obervation 2