Inside Artemis II: The Most Powerful Rocket Ever Built

Why It Matters

SLS provides the lift capability essential for returning humans to the Moon, anchoring NASA’s Artemis program and shaping the future of U.S. deep‑space exploration and commercial launch collaboration.

Key Takeaways

• SLS generates nearly 9 million pounds of thrust at liftoff.
• Rocket stands 322 feet tall, taller than Statue of Liberty.
• Core stage uses four refurbished RS-25 shuttle engines.
• Block 1 design supports up to 27‑ton lunar payloads.
• New launch abort system can pull Orion capsule away safely.

Summary

The video walks viewers through NASA’s Space Launch System (SLS), the powerhouse behind Artemis II, detailing its size, thrust and role as the most powerful rocket NASA has built since the Saturn V.

At 322 feet tall, the SLS produces nearly nine million pounds of thrust, using a Boeing‑built core stage flanked by twin Northrop Grumman solid rocket boosters and four refurbished RS‑25 shuttle engines fed by 730,000 pounds of liquid hydrogen and oxygen. The Block 1 configuration, employed on Artemis 1, 2 and 3, can lift up to 27 tons to lunar orbit, and NASA plans to augment it with a commercial upper stage for later missions.

The design traces its lineage to the canceled Ares V program and the Space Shuttle, reusing shuttle engines and larger five‑segment boosters. A new launch‑abort tower, reminiscent of Mercury and Apollo safety systems, sits atop the Orion capsule, offering crew escape capability absent from the shuttle era. Compared with historic Saturn V (363 ft) and emerging megarockets like Blue Origin’s New Glenn and SpaceX’s Starship, the SLS sits in the middle of the size spectrum but remains the most powerful U.S. launch vehicle in service.

By delivering the thrust needed for crewed lunar missions, the SLS unlocks NASA’s Artemis roadmap, paving the way for sustained Moon presence and deeper‑space exploration, while its planned commercial upper‑stage partnership signals a shift toward hybrid government‑industry launch solutions.

Original Description

To send astronauts back to the moon, NASA needs a rocket unlike anything flying today. The Space Launch System — or SLS — is the most powerful rocket ever built, producing more thrust than the Saturn V that launched Apollo astronauts.

In this episode of Inside Artemis II, we explore how the rocket evolved, compare it to other American-made heavy-lift launchers and more.

Credit: Space.com | Footage & graphics courtesy: NASA, SpaceX, BLue Origin, NASA's Scientific Visualization Studio, Ernie Wright

Produced and Edited by Steve Spaleta and Tariq Malik

Special Thanks to NASA’s Kennedy Space Center Visitor Complex

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