As you descend, your instruments detect helium in the upper atmosphere and carbon dioxide in the lower atmosphere. How many layers of atmosphere will you pass through before you reach the planet's surface?
Interesting fact
The highest mountain discovered in our solar system is Mars’s Olympus Mons. The towering mountain is three times higher than Mount Everest!
Interesting fact
The highest mountain discovered in our solar system is Mars’s Olympus Mons. The towering mountain is three times higher than Mount Everest!
