James Wray is a professor at the Georgia Institute of Technology who's exploring the compositions of Mars and Europa.
June 11, 2011
For now, Mars continues to eclipse Jupiter's moon Europa (shown here to scale) in NASA's flagship mission plans, but not in its appeal to many planetary scientists.
Older blog posts
Become a member of The Planetary Society and together we will create the future of space exploration.
Help advance robotic and human space exploration, defend our planet, and search for life.