I contributed to one company(intuitive machines) by buying their stock a few weeks back, they are public - ticker is LUNR. They have a moon mission going on as this is written and plan to touch down on the moon 3/6/25 and drill for water(look for IM-2 mission). Last year they were the first private company to send a lander to moon and made headlines due to the missions success. So for me its profitable and I get to contribute to interesting science.