Back to Article List From the October 2008 issue Ask Astro web extra: Ever wonder why Mars is red? Associate Editor Daniel Pendick explains why Mars is referred to as the red planet. By Astronomy Staff | Published: October 27, 2008 | Last updated on May 18, 2023 Key Takeaways:
Robotic Spaceflight, Solar System Did Pluto’s gravity affect the trajectory of New Horizons when it flew past?
