SpaceX Dragon Successfully Docks to ISS, Delivering Critical Science and Supplies for Expedition 74

MCALLEN, Texas — A SpaceX Cargo Dragon spacecraft has autonomously docked to the International Space Station, marking another flawless milestone in NASA’s Commercial Resupply Services program and underscoring the reliability that powers humanity’s expanding presence in orbit.

The Dragon on CRS-34, launched aboard a Falcon 9 rocket from Cape Canaveral Space Force Station on May 15, successfully berthed at the forward port of the station’s Harmony module at approximately 6:37 a.m. EDT today. The spacecraft delivered nearly 6,500 pounds of science experiments, crew supplies, hardware, and essential equipment to support ongoing operations aboard the orbiting laboratory.

This marks SpaceX’s 34th resupply mission under its NASA contract — These flights have become the dependable backbone of operations on the orbiting laboratory.

The flawless execution of a 34th resupply mission is a testament to the maturing cadence of SpaceX’s partnership with NASA, which is set to land astronauts on the moon in 2028 via the Artemis program.

Key Payloads and Scientific Focus

Among the cargo are scientific materials to support cutting-edge investigations designed to advance human health, Earth observation, and materials science in space.

Researchers on the International Space Station will compare the results of Earth-based microgravity simulators with actual conditions in space.

One key experiment, SPARK, will help researchers better understand changes to red blood cells and the spleen during spaceflight. Scientists will analyze human blood samples and imagery collected before, during, and after missions to evaluate how red blood cells break down and how human organ systems function in microgravity. The goal is to identify ways to protect astronaut health on longer journeys, paving the way for sustained human presence in space.

Other experiments include ODYSSEY, which tests how well Earth-based microgravity simulators replicate actual space conditions by studying bacterial behavior; and CLARREO Pathfinder, which takes precise measurements of sunlight reflected by Earth and the Moon.

The current Expedition 74 crew — including NASA astronauts Chris Williams, Jessica Meir, and Jack Hathaway (who arrived aboard a SpaceX Falcon 9 in February as part of Crew-12) — will help oversee these investigations. They are working alongside their international counterparts: Roscosmos cosmonauts Sergey Kud-Sverchkov (Commander), Sergey Mikaev, and Andrey Fedyaev, as well as ESA astronaut Sophie Adenot of France.

Steady Momentum Toward a 2028 Return to the Moon

Every successful Dragon mission reinforces the operational maturity of the reusable Falcon 9 and Dragon systems that will support crewed flights to the Moon, Mars, and beyond.

NASA’s Artemis program continues to build momentum following the successful Artemis II lunar flyby mission in April. In late 2027, Artemis III will proceed with a low-Earth orbit demonstration mission to test Orion spacecraft rendezvous and docking with commercial lunar landers.

This sets the stage for Artemis IV, targeted for early 2028, which aims to achieve the first crewed lunar landing in the Artemis era. Subsequent missions are planned to establish a sustained presence on the Moon.