Significant amounts of liquid water last existed on the surface of Mars during the
A) Noachian Era
B) Amazonian Era
C) Hadean Era
D) Hesperian Era

Question

Quizplus · Accepted Answer

The Hesperian Era on Mars, which occurred between 3.7 and 3.0 billion years ago, is believed to be when significant amounts of liquid water existed on the Martian surface. This evidence includes features such as ancient riverbeds, delta deposits, and valleys that were likely carved by flowing water. The Noachian Era, which preceded the Hesperian, is also known for potentially having water on the surface, but it is thought to have been much more limited than during the Hesperian. The Amazonian Era, which is the current geological era on Mars, is marked by very dry conditions with limited evidence of recent liquid water. The Hadean Era, on the other hand, is a term used to describe the very early history of the entire solar system and is not specific to Mars.

Significant Amounts of Liquid Water Last Existed on the Surface