- Artemis II generates volumes of data that older systems cannot handle efficiently
- Laser communications transmit significantly more data than traditional radio systems
- Infrared light enables high-speed space communication over vast distances
The sheer volume of data generated during modern lunar missions has made older radio systems almost obsolete.
Artemis II was expected to produce between 300 GB and more than 400 GB of high-resolution imagery and telemetry by the end of the mission.
By comparison, the Apollo 13 mission operated with a fraction of this capacity, and the difference isn’t just incremental: It’s a fundamental overhaul of how spacecraft communicate with Earth.
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The engineering change that made the jump possible
Traditional radio frequencies couldn’t move that much data fast enough, so engineers turned to an entirely different method: laser communications.
Laser communications rely on invisible infrared light, which travels at the same speed as radio waves but carries much more information.
Since infrared light has a higher frequency, it can fit more data in each transmission – and the Orion Artemis II optical communications (O2O) system has demonstrated the ability to link more than 100 GB of data.
This system could move about 36 GB in a single hour, surpassing traditional radio systems on S-band, which could only handle about 7 GB per day.
NASA noted, “More data means more discoveries,” although the practical benefits for crew safety and real-time decision-making remain to be proven.
However, this system had its terrestrial limits, and any weather disturbance could interrupt the flow of information.
Telescopes at the ground stations at NASA’s White Sands Complex in New Mexico and the Table Mountain Facility in California had to operate in high, dry environments with minimal cloud cover to maintain a strong laser link.
Still, the O2O terminal – including a 4-inch telescope, two gimbals, a modem and a controller – successfully passed preparation exams over several days.
A NASA official described the achievement as “an impressive step forward,” but the system was not used on Artemis III, raising questions about the pace of its adoption.
Although a 100,000-fold improvement over Apollo 13 seems extraordinary, the comparison deserves careful consideration.
The Apollo 13 radio systems were designed in the 1960s, and modern radio technology has also improved significantly.
The real test will be whether laser communications prove reliable over far distances without frequent interventions from ground stations.
The Australian National University attempted to receive O2O’s laser links using affordable commercial components – a demonstration that could validate or disprove claims of scalability.
So far the numbers are impressive, but space history is littered with promising technologies that have struggled outside of controlled conditions.
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