A NASA statement reads, “Measuring the sizes and frequency of impact craters provides a constraint on the age of the landscape. However, craters in icy terrain are modified by processes that flatten and change them in such a manner that it is hard to say for sure if it had an impact origin.”
The image below was taken from the Mars Reconnaissance Orbiter’s HiRISE. The circle can be seen surrounded by small specs and scientists are not completely sure what to make of the shape’s strange texture. Despite being a difficult process, researchers are using size and frequency to help potentially determine the circle’s age.
The image below was taken from the Mars Reconnaissance Orbiter’s HiRISE. The circle can be seen surrounded by small specs and scientists are not completely sure what to make of the shape’s strange texture. Despite being a difficult process, researchers are using size and frequency to help potentially determine the circle’s age.