SLS Block 1B | Artemis IV
National Aeronautics and Space Administration · Kennedy Space Center, FL, USA
H1 2028
Rocket file · LV-205
Space Launch System Block 1B
National Aeronautics and Space Administration · Space Launch System · FLIGHTS FILED
Space Launch System Block 1B is an expendable launch vehicle built by National Aeronautics and Space Administration. It stands 111.0 m tall, lifts 105,000 kg to low Earth orbit. It hasn't flown yet. Its next flight is SLS Block 1B | Artemis IV for National Aeronautics and Space Administration, no earlier than the first half of 2028.
Specification
Vehicle spec sheet
ON FILE
Height111.0 m
Diameter8.4 m
Payload to LEO105,000 kg
Payload to GTONOT ON FILE
Maiden flightNOT ON FILE
ReusableNo, expendable
Launch cost$2000M
StatusFLIGHTS FILED
As listed by Launch Library 2. The cost is Launch Library’s figure, not a quoted price. Figures for rockets outside the sixty most-flown were last read on 2026-11-05.
Flight record
Reliability
NO FLIGHTS
Total flights0
Successful0
Failed0
Success rateNO DATA
Landing attempts0
Landing successN/A
Scheduled4
VariantBlock 1B
About Space Launch System (SLS)
The Space Launch System (SLS) is an American Space Shuttle-derived heavy expendable launch vehicle. It is part of NASA's deep space exploration plans including as the main launch vehicle of the Artemis program. SLS follows the cancellation of the Constellation program, and is to replace the retired Space Shuttle.
Upcoming flights
SLS Block 1B | Artemis V
National Aeronautics and Space Administration · Kennedy Space Center, FL, USA
H2 2028
SLS Block 1B | Artemis VI
National Aeronautics and Space Administration · Kennedy Space Center, FL, USA
T-··:··:··2030-09-30
SLS Block 1B | Artemis VII
National Aeronautics and Space Administration · Kennedy Space Center, FL, USA
T-··:··:··2031-09-30
Space Launch System Block 1B in the archive
From NASA's public image library and Wikimedia Commons. Each photo shows the credit its licence asks for and links back to where it came from.
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Common questions
- How many times has Space Launch System Block 1B flown?
- Space Launch System Block 1B hasn't flown yet, but 4 flights are scheduled.
- What is Space Launch System Block 1B's success rate?
- Space Launch System Block 1B hasn't flown, so there's no success rate yet.
- When is the next Space Launch System Block 1B launch?
- SLS Block 1B | Artemis IV, flown by National Aeronautics and Space Administration. It's set for no earlier than the first half of 2028 from Launch Complex 39B.
- How much can Space Launch System Block 1B lift to orbit?
- Launch Library 2 lists Space Launch System Block 1B at 105,000 kg to low Earth orbit.
- Is Space Launch System Block 1B reusable?
- No. Launch Library 2 lists Space Launch System Block 1B as expendable, so no stage is recovered to fly again.