Update: First stage complete, main engine cutoff good, fairing separation good. Second engine ignition and cutoff successful, and GRACE-FO deployment complete (we won’t know if they’re in a good orbit until NASA confirms). Second burn and Iridium orbit good…. All satellites deployed, making that a successful mission!
Today’s the day for SpaceX’s launch of Iridium’s NEXT communications satellites and a pair of twin birds from NASA that will monitor the fresh water on the surface of the Earth. You can watch the launch right here:
Liftoff is scheduled for 12:47 PM Pacific Time, so SpaceX’s live stream should fire up about 15 minutes ahead of that; NASA will also have its own updates, since it has skin in the game.
This is an unusual launch — the rocket will be making some complicated maneuvers 300 miles up to make sure NASA’s satellites are deployed correctly, then it travels the rest of the way to the targeted orbit for the communication satellites.
A few minutes after liftoff, the Falcon 9 first stage (incidentally, the one that launched the lost Zuma satellite in January) will detach and burn up. This will be its last mission — it’s not one of the “Block 5” rockets with all the durability improvements, so it would take a lot of money and time to fly again, and the risk of failure would grow considerably every time. So this its swan song. Rocket, we salute you.
The fairing, however, which covers the payload, may be recovered after ejection by Mr Steven, a boat with a huge net on top.
Disrupt 2026: The tech ecosystem, all in one room
Your next round. Your next hire. Your next breakout opportunity. Find it at TechCrunch Disrupt 2026, where 10,000+ founders, investors, and tech leaders gather for three days of 250+ tactical sessions, powerful introductions, and market-defining innovation. Register now to save up to $400.
Save up to $300 or 30% to TechCrunch Founder Summit
1,000+ founders and investors come together at TechCrunch Founder Summit 2026 for a full day focused on growth, execution, and real-world scaling. Learn from founders and investors who have shaped the industry. Connect with peers navigating similar growth stages. Walk away with tactics you can apply immediately
Offer ends March 13.
Falcon 9 and Iridium-6/GRACE-FO went vertical last night ahead of today’s launch at 12:47 p.m. PDT, 19:47 UTC from Vandenberg Air Force Base in California. https://t.co/wJxwQ9XSKJ pic.twitter.com/jiRT8Cn2wU
— SpaceX (@SpaceX) May 22, 2018
The second stage will take the payload to about 300 miles up, at which point it will cut off, and about 11 minutes after liftoff the rocket will dip its nose and spin a bit to get the GRACE-FO satellites into position. About 45 minutes after they deploy, it will make a second burn and take itself up to nearly 500 miles altitude (this will take about half an hour), where Iridium’s satellites will be let out, ending the mission.
If for some reason things are delayed, the next launch opportunity is tomorrow at the same time.
