Data Centers in Space Are Even More Cursed Than Previously Believed

Space data centers are proposed to address the increasing energy demands of AI, as traditional data centers consume massive power. Placing data centers in space offers access to constant solar energy and the vastness of space, potentially reducing energy costs and environmental impact compared to terrestrial data centers.

SpaceX, now merged with xAI, proposed launching up to one million satellites into Sun-synchronous orbit to create orbital data centers. These satellites would orbit at altitudes between 310 and 1,200 miles to maximize solar energy capture for powering the data centers.

Experts are skeptical about space data centers due to high launch costs, maintenance difficulties, and environmental impacts. Launch costs need to decrease significantly, and in-space servicing is required to address hardware malfunctions. Furthermore, launching many satellites could increase space debris and atmospheric pollution.

For space-based data centers to be economically viable, launch costs need to fall below $200 per kilogram. This is a sevenfold reduction from current levels, according to Rebekah Reed, former NASA associate director, and this threshold isn’t expected until the mid-2030s.

Launching a large number of satellites for space data centers could increase the risk of collisions and create more space debris, threatening communication, weather, and navigation services. Additionally, the carbon footprint from manufacturing, launching, and disposing of these satellites could exceed that of terrestrial data centers.