Do you agree??  Apparently NASA has a new theory in regards to this question:

Where did Mars’ atmosphere and water go? The answer is blowing in the wind. NASA’s Mars Atmosphere and Volatile Evolution Mission (MAVEN) has shined some light onto how Mars lost its atmosphere after a year of orbiting the red planet. 4.2-3.7 billion years ago, Mars started to lose its atmosphere. This was caused by strong solar winds from a younger and more violent sun. Solar winds are charged particles from the sun that travel at one million miles per hour.

Lt’s find out more on what they are thinking on page 2

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