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 Jun 11, 2010 at 08:49 UTC
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Cassini Titan flyby (T-72):
21 days, 15 hours, 52 minutes
EPOXI comet Hartley 2 flyby:
62 days
Cassini Titan flyby (T-73):
69 days, 10 hours, 52 minutes
