Mars is our closest planetary neighbor—but how similar is it to Earth, really?

🌡️ Temperature

• Earth: Average surface temp ~14°C
• Mars: Much colder, ~ -60°C

🌫️ Atmosphere

• Earth’s atmosphere is 78% nitrogen, 21% oxygen.
• Mars has a thin atmosphere, 95% CO₂, which can’t support human life without help.

🌋 Surface & Terrain

Both planets have volcanoes, canyons, and polar ice caps.
But Mars has Olympus Mons, the tallest volcano in the solar system!

👽 Life?

We’ve found no life on Mars yet, but robotic missions continue to look for signs of ancient microbial life.

Could Mars ever support humans? That’s the big question of the 21st century.