Timelines are divided into three categories -- Planetary Science, Astrophysics and Heliophysics.
Operational mission durations are shown with filled blue, brown (Mars missions) and gray (Lunar missions) bars. Future missions under implementation are shown with a green bullet 
. Missions under study, pre-formulation or formulation are shown with a gray bullet 
, and then a light blue bar as expected duration.
Please note that these are probable mission durations and serve as guidance only.
Pan a timeline by dragging it horizontally or using your mouse-wheel. Click on an event to get more information.
Last Updated Fri Apr 24, 2009 at 10:38 UTC
Cassini Titan Flyby T-58:
4 days, 14 hours, 38 minutes
Third MESSENGER Mercury Flyby:
87 days, 21 hours, 33 minutes
LCROSS Lunar Impact:
97 days, 9 hours, 4 minutes
