Facts about Mars

Average Solar Distance 228 million km
Revolution Period 686.98 Earth days
Rotation Period 24.6 hours
Equatorial diameter 6786 km
Gravitational Pull 0.38 times that of the Earth
Natural Satellites 2      (Tell me more!)

The StarChild site is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA/ GSFC.

StarChild Authors: The StarChild Team
StarChild Graphics & Music: Acknowledgments
StarChild Project Leader: Dr. Laura A. Whitlock
Curator: J.D. Myers
Responsible NASA Official: Phil Newman