In a groundbreaking endeavour, blockchain startup SpaceChain achieved a significant milestone in 2021 by launching the first-ever Ethereum node into space. With this pioneering initiative, SpaceChain aims to extend the Ethereum network's reach beyond the confines of Earth, thereby bolstering the security and resilience of blockchain technology by reducing dependence on centralised infrastructure. Since its inception in 2018, SpaceChain has been deploying Low Earth Orbit (LEO) satellites, which offer a more cost-effective solution compared to traditional geo-stationary satellites. These satellites function as blockchain nodes, facilitating various tasks such as data processing, transmission, in-space data storage, and application development. This venture represents a remarkable fusion of space exploration and blockchain technology, opening up new horizons for decentralised networks and expanding the possibilities of interplanetary data exchange.