Wikipedia
Vernadskyy is a lunar crater on the far side of the Moon, behind the visible eastern limb. It lies to the west-northwest of the smaller crater Siedentopf. To the south is Gavrilov, and much farther to the west is Meggers.
This is a formation that has seen better days. The outer rim has been bombarded by a myriad of lesser impacts, producing an eroded and irregular edge. Attached to the outher rim to the northeast is the satellite crater Vernadskiy B, an equally worn crater. The interior floor of Vernadskiy is also marked by a number of small impacts, although in general it is more level than the uneven terrain that surrounds the crater.
In some sources the name is spelt as Vernadskij or Vernadsky. Named in honour of Vladimir Vernadsky.