Group 1 - The newly launched Space and Technology ETF (MARS) by Roundhill Investments focuses on space-related technology, including GPS, weather forecasting, and communications [1] - The global space economy is predicted to reach $1.8 trillion by 2035, indicating significant growth potential in the sector [3] - The MARS ETF primarily invests in communications and industrials, which constitute about 89% of its portfolio [4] Group 2 - The MARS ETF's largest holdings include Rocket Lab (10%), AST SpaceMobile (10%), and EchoStar (9%) [4] - Notably, SpaceX is absent from the MARS portfolio as it only invests in publicly traded securities, but may be considered if the company goes public [4] - Other existing space-focused ETFs include the $821 million ARK Space and Defense Innovation ETF (ARKX) and the $358 million Procure Space ETF (UFO) [2]