The Mars rover Curiosity has recently found evidence that there was liquid water on the planet's surface at some point in its history.Because we have not found any liquid water on the planet today,what does this imply about Mars?

Question

Quizplus · Accepted Answer

The discovery of evidence of past liquid water on Mars implies that the climate on the planet was once capable of supporting liquid water, likely due to a warmer climate that allowed the polar ice caps to melt. However, this does not necessarily mean that the entire planet was covered in water at one point, and there is no evidence to support the idea that Mars' interior is made entirely of water. A drought is also not a likely explanation for the absence of liquid water on Mars today.

The Mars Rover Curiosity Has Recently Found Evidence That There