What are the largest lunar craters?
Do have featureless flat bottoms, have central peaks or are they bowl-shaped?
If it's none of the things I mentioned, just say "None Of Them" and please explain what they do have.
- 6 years ago
Hard question. There's a range of possibilities; if large meteor comes straight down at very high speed, the energy of impact is spread more or less into the surface, 360 degrees around the point of impact; this will blast out a crater, ejecting central material and creating a raised lip around the point of impact.
A rock coming in an oblique impact will gouge out a crater that's assymetrical; we see a few on the lunar surface, pushing more material in one direction over another.
As for a central peak, that requires rocks that are greater than about 300 feet across (could be more), and up to about 2 miles across. Beyond that, you fracture the surface and liquefy the surrounding area that it 'melts' - filling in the region... These are generalities - and there are exceptions - based on the type of meteor, speed, and angle of impact.