Karman+, a startup with ambitions to build autonomous spacecraft that can travel to asteroids and mine them for materials, has raised $20 million in a seed round. The company plans to use the funding to develop its hardware and software, with the goal of launching its first spacecraft in 2027. Karman+'s initial target is to extract water from asteroids, which can be used to refuel space tugs and extend the life of aging satellites. The company believes that its technology can bring down the cost of asteroid mining missions to $10 million or less, compared to the $1 billion spent on previous missions. Karman+ is led by CEO Teun van den Dries, who previously founded a real estate data startup that was acquired for $290 million in 2022. The company's investors include London-based Plural and Antwerp-based Hummingbird, as well as individual investors such as Kevin Mahaffey, co-founder of Lookout.