A SpaceX Dragon cargo spacecraft is scheduled to undock from the International Space Station at 12:05 p.m. EDT on June 16. Part of NASA’s 34th commercial resupply services mission, the vehicle will splash down in the Pacific Ocean on June 17, returning critical biological samples and scientific hardware to Earth.
What scientific research is returning from the ISS?
The Dragon capsule is transporting several high-priority research samples that NASA officials say could influence future space exploration and medical science. According to a NASA media advisory released June 12, the cargo includes bioprinted organ and cartilage tissue.
Researchers are also bringing back data regarding improvements to cryogenic fuel storage. This information is intended to support the logistics of long-duration space missions. Additionally, the mission carries DNA-inspired materials aimed at developing new cancer treatments.
Beyond biological samples, the spacecraft is returning specific hardware to Earth. This equipment includes:
- An ocular imaging device used to monitor the eye health of crew members.
- An absorbent bed designed to filter trace contaminants from cabin air.
- A separator pump from the station’s waste and hygiene compartment.
How does the Dragon compare to other cargo spacecraft?
The SpaceX Dragon serves a unique role in the current supply chain for the International Space Station. It is the only operational cargo spacecraft currently capable of returning from orbit to Earth.
Other active freighters used for ISS resupply follow a different operational model. According to mission profiles for Northrop Grumman’s Cygnus, Russia’s Progress, and Japan’s HTV-X, these vehicles are expendable. They are designed to burn up in the atmosphere at the conclusion of their missions rather than returning for reuse.
| Spacecraft | Operator | Return Capability |
|---|---|---|
| Dragon | SpaceX | Reusable |
| Cygnus | Northrop Grumman | Expendable |
| Progress | Roscosmos | Expendable |
| HTV-X | JAXA | Expendable |
When will the CRS-34 mission splash down?
The Dragon spacecraft launched aboard a SpaceX Falcon 9 rocket on May 15. It arrived at the International Space Station two days later, delivering approximately 2,950 kilograms (6,500 pounds) of food, scientific hardware, and supplies for the Expedition 74 crew.
Following the undocking scheduled for 12:05 p.m. EDT on June 16, the vehicle will begin its descent. If the mission proceeds as planned, the spacecraft will splash down in the Pacific Ocean off the coast of California at approximately 8:08 a.m. EDT on Wednesday, June 17.
Frequently Asked Questions
What is the SpaceX CRS-34 mission?
It is the 34th commercial resupply services mission conducted by SpaceX for NASA to provide food, equipment, and supplies to the International Space Station.
Can all ISS cargo ships return to Earth?
No. Only the SpaceX Dragon is currently operational as a reusable cargo craft. Vehicles like Cygnus, Progress, and HTV-X are expendable and burn up upon reentry.
Where does the Dragon spacecraft land?
The spacecraft is scheduled to splash down in the Pacific Ocean, specifically off the coast of California.
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