A student creates a vendor depicting two objects in the solar system on one side of the vein diagram, the student writes surface features such as mountains, valleys and volcanoes, and on the other side of the midnight at the student right unable to land on because there is no solid surface which two objects is the student comparing

Based on the description provided, it is clear that the student is comparing two objects in the solar system - one with surface features like mountains, valleys, and volcanoes, and the other that cannot be landed on due to the absence of a solid surface. Unfortunately, the specific names of these objects are not mentioned in the description, so it is difficult to determine which two objects the student is comparing.