• Source: https://www.popsci.com/we-finally-know-what-happened-to-most-mars-missing-atmosphere

Pick "This" or "That" and reply below why you made that decision for a chance to win up to 5% of this post's total payout!

This

Earth

• Source: https://earth.google.com/web/

That

Mars

• Source: https://science.howstuffworks.com/mars-moves-closer-to-earth.htm