TESS scrubbed

Learned the TESS launch was scrubbed for today! Grace (on Facebook) and Tanya (on Twitter). No reason why yet... I think I read somewhere that there are no good windows until later in the week.

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From SpaceX's Twitter feed:

Standing down today to conduct additional [Guidance, Navigation, and Control] analysis, and teams are now working towards a targeted launch of @NASA_TESS on Wednesday, April 18.

The next launch opportunity will come at 6:51 PM EDT Wednesday. The launch times change based on TESS's orbital target and the position of the moon, which the satellite will use to help maneuver into its final high-altitude science orbit.