Help Us Choose the Greatest Moments in Solar System Exploration

Five decades of amazing solar system exploration began in December 1962 when Mariner 2 flew past Venus -- the first successful mission to another planet.

We want to know your favorite moments from the colorful history of robotic exploration beyond Earth.

We'll tally the numbers for several months. Winners will be announced in late 2012. One vote per email address, please.

Find Out What the Experts Picked:

Michelle's Picks	Robert's Picks	David's Picks	Bob's Picks
Peter's Picks	Fran's Picks	Jeff's Picks	Amy's Picks
Yvonne's Picks	Bill's Picks

Special announcement for scientists, historians and education professionals:

• "Solar System Exploration @ 50" Second Announcement -- Call for Papers
• NASA PSD Education/Public Outreach Opportunities in FY 2012 (PDF, 109 KB)