"Falcon 9 is in startup."
"Go for launch."
" ... Five, four, three, two, one. Engines full power. And liftoff! Go Falcon. Go Starlink."
SpaceX launch personnel counted down the final minute before liftoff of Saturday night's Falcon 9 rocket launch from Cape Canaveral Space Force Station, which bucked the odds and streaked skyward amid a cloudy forecast and sporadic rainstorms across Brevard County.
Postponed from its initial Friday night launch window, the 11 p.m. EST launch deployed a payload of 23 Starlink internet-beaming satellites into low-Earth orbit.
The 230-foot rocket's first-stage booster descended for a fiery landing aboard the SpaceX drone ship A Shortfall of Gravitas out on the Atlantic Ocean.
Thick cloud layers, cumulous clouds and upper-level wind shear threatened the Starlink 6-31 mission. The Space Force's 45th Weather Squadron had only pegged the odds of "go for launch" weather at 40% for both Friday and Saturday nights.
Saturday's launch extended this year's ongoing record of annual orbital launches from the Space Coast to 67 with four more weeks to go.
Looking ahead this week, an updated National Geospatial-Intelligence Agency navigational warning indicates Cape Canaveral's next rocket launch window will open late Wednesday night and extend 4½ hours into early Thursday morning.
That launch window opens at 11 p.m. Wednesday and extends until 3:31 p.m. EST Thursday, mirroring the hours of of recent SpaceX Starlink missions. However, SpaceX has yet to publicly announce its next launch attempt.
For the latest schedule updates at the Cape, visit floridatoday.com/launchschedule.
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This article originally appeared on Florida Today: SpaceX Starlink mission launches Saturday after one-day postponement