As part of its Commercial Resupply Services contract, SpaceX will launch Falcon 9 and Cargo Dragon to ISS no earlier than Tuesday, May 12th. This will be a Return To Launch Site (RTLS) mission, so the Space Coast area will experience sonic booms as the booster returns to land near its launch site from Space Launch Complex 40 at Cape Canaveral Space Force Station.
At A Glance
| Detail | Information |
|---|---|
| Mission | NASA’s SpaceX CRS-34 |
| Date | NET Tuesday, May 12, 2026 |
| Launch Window | 7:16 PM EDT (instantaneous) |
| Weather | 35% GO (45th Weather Squadron) |
| Organization | SpaceX (Customer: NASA) |
| Rocket | Falcon 9 Block 5 |
| Trajectory | Northeast (ISS, 51.6° inclination) |
| Launch Site | SLC-40, Cape Canaveral Space Force Station |
| Booster Landing | SLC-40, Cape Canaveral Space Force Station (RTLS) |
| Payload | Cargo Dragon C209 (~6,500 lb of science and supplies) |
| Destination | International Space Station — Harmony forward port |
| Streaming Coverage | SpaceX | NASA+ | Spaceflight Now |
Instantaneous window with a 35% probability of acceptable weather. Backup launch opportunity Wednesday, May 13 at 6:50 PM EDT. Docking is scheduled for Thursday, May 14 at 9:50 AM EDT; NASA launch coverage begins at 7:00 PM EDT on May 12 on NASA+, Amazon Prime, and YouTube.
Payload
Cargo Dragon will carry about 6,500 pounds of supplies to the forward port of the Harmony module on ISS. The science manifest leans toward biology and heliophysics: ODYSSEY compares bacterial behavior in orbit against ground-based microgravity simulators, while STORIE monitors charged particles to refine space weather forecasting that affects power grids and satellites. Laplace investigates how dust grains move and collide in microgravity, addressing the fundamental question of how planets accrete from protoplanetary disks. Green Bone grows bone cells on a wood-derived scaffold with potential osteoporosis applications, and SPARK examines red blood cell and spleen changes to inform long-duration mission health protocols.
The station-hardware portion reflects routine but consequential life-support maintenance, including a replacement power cable for the European Enhanced Exploration Exercise Device and a catalytic reactor for the Water Recovery and Management System. Two Universal Pretreat Concentrate Tanks and a Russian-hose adapter are launching to keep the Universal Waste Management System and Waste Hygiene Compartment in service alongside the existing Russian pretreat hardware. Dragon will also deliver an Ultraprobe ultrasonic inspection tool, a Remote Sensor Unit for the station’s vibration monitoring system, and flexible patches for emergency pressure-hull repair. An updated ARMADILLO cartridge with hose assemblies will improve water processing feeding the oxygen generators, and a nitrogen recharge tank assembly will replenish gas reserves.
NASA astronaut Jack Hathaway and ESA astronaut Sophie Adenot will monitor Dragon’s arrival, with the spacecraft remaining berthed about a month before a Pacific splashdown in mid-June. The return manifest includes an ocular imaging device used for crew eye-health monitoring, a trace-contaminant sorbent bed from the cabin air system, and a separator pump from the Waste and Hygiene Compartment. A vestibule pressure management device is also coming down to become a ground spare. Most notably, the Advanced Plant Habitat — which supported years of long-duration plant biology research aboard the station — is returning for eventual museum display, marking the end of its active service life on orbit.
Weather
The 45th Weather Squadron of Space Launch Delta 45 has released their L-1 Launch Mission Execution Forecast: only 35% GO for Tuesday, with conditions improving as the week continues.
Trajectory
Northeast, as is the norm with ISS bound missions.
Launch Viewing: In Person
As always, if you plan to watch the launch in person, arrive early and settle in at your chosen location.
Follow the latest launch information on Spaceflight Now’s coverage, as well as SpaceX’s X.com feed and website.
Launch times can and do change quickly, especially when weather is a concern.
Finally, keep in mind that streaming coverage on YouTube or the X platform runs slightly behind the actual countdown — usually about 5-10 seconds. That’s simple physics – it takes some time for the signal to go through the Internet and the servers hosting it. The Next Spaceflight app displays the real countdown, so it is a good choice in the last few minutes.
| Area | Spot | Distance to SLC-40 | Notes |
|---|---|---|---|
| KSC (Ticketed) | LC-39 Observation Gantry | ~3.4 mi | Ticketed (KSCVC bus). Closest public option when offered; limited inventory. KSCVC viewing options. |
| KSC (Ticketed) | Banana Creek / Apollo–Saturn V Center | ~6.3 mi | Ticketed (KSCVC bus). Seating, restrooms, big screens. KSCVC viewing options. |
| Canaveral Nat’l Seashore | Playalinda Beach (Lots 1–2) | ~6–7 mi | Entrance fee (NPS). See fees & passes. Hours/road access vary; limited amenities. |
| Port Canaveral | SR-528 Bennett Causeway pull-offs | ~11–12 mi | Free roadside shoulder; arrive early; bring chairs. |
| Port Canaveral | SR-401 / Port waterfront | ~11–13 mi | Free public areas; sightlines toward pads; occasional security closures. Port launch viewing info. |
| Port Canaveral | Jetty Park (pier & beach) | ~12–13 mi | Park fee; restrooms & concessions; popular & crowded. Jetty Park fees/passes. |
| Cape Canaveral (city) | Cherie Down Park | ~13–14 mi | Free public beach access; small parking lot. |
| Cocoa Beach | Cocoa Beach Pier | ~17–20 mi | Public beach; shops & restrooms; tourist crowds. Parking fees (city). |
| Cocoa Beach | Alan Shepard Park | ~18–19 mi | Paid parking; restrooms; easy beach access. Parking fees (city). |
| Cocoa Beach | Lori Wilson Park | ~19–20 mi | Free parking; restrooms & boardwalks; large lot. |
| Titusville / US-1 | Max Brewer Bridge & Parrish Park | ~12–14 mi | Free public area; elevated views; fills quickly. |
| Titusville / US-1 | Space View Park | ~13–15 mi | Free public park; historical displays; occasional audio feeds. |
| Titusville / US-1 | Rotary Riverfront Park | ~13–15 mi | Free public park; open river views; moderate parking. |
| Titusville / US-1 | Kennedy Point Park | ~13–15 mi | Free public park; long riverfront; good tripod space. |
| Titusville / US-1 | Space Bar (Rooftop) | ~12–14 mi | Rooftop bar at Courtyard by Marriott with launch views; seating fills quickly. Hours vary—see official hours. |
A map of the viewing locations can be found here: Launch Viewing Map
Launch Viewing: Online
SpaceX will have a livestream of the launch on their website: NASA CRS-34 Mission Page. This will also be available on the X platform. Coverage starts about five minutes before liftoff.
Spaceflight Now will have coverage of the launch starting about one hour before liftoff on Youtube: link
For official updates regarding launch times, SpaceX.com is the best source of information. Starlink launch times change from time to time, and the company generally updates their website within minutes of the decision to change the launch time. This is very handy if none of the streaming options on YouTube have started their broadcasts.
Next Space Flight an app for iOS and Android phones, has a real-time countdown clock that is accurate to a second, give or take. The app is free. Search the App Store or Google Play. They are also on the web: nextspaceflight.com.
Author: Charles Boyer
NASA kid from Cocoa Beach, FL, born of Project Apollo parents and family. I’m a writer and photographer sharing the story of spaceflight from the Eastern Range here in Florida.
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