In the first decade of the 21st Century, a miracle substance named handwavium appeared seemingly out of nowhere. Handwavium had properties that defied the known laws of physics, and could bring the impossible within reach of the ordinary person: space-capable flying cars, subtle and obvious modifications of the human body, even create new life from dumb matter.
Scientists studied it. Governments feared it. The rest of the world didn’t care all that much. Science fiction fandom saw handwavium as the key to making their fantasies reality, and took advantage. Fans founded the Crystal Cities of Venus, the topless towers of Helium, the bottled city of Kandor on the Moon, built farms in the sky and sailed beyond the edge of the solar system to the near stars.
It’s a brand-new Space Age, and the people who want to go are the ones leading the pack.