Well the grand canyon is deep only because the water eroded the sides of the canyon over a long period of the time. so im guessing the same way goes for it being deep since it was a river
<span>Mercury's distance at inferior conjunction is 0.61 AU
Looking at a table of orbits, Mercury has an orbital distance of 0.39 AU. So the inferior conjunction will be:
1 AU - 0.39 AU = 0.61 AU</span>
