The picture shows LS Allgood in space. Interesting thought: it would probably be built of stainless steel. While spacecraft launched from Earth are typically aluminum alloy and/or composites, an equivalent craft built in space, from materials taken from the moon or asteroids, would likely use the iron and nickel present there. While aluminum is available also, it is more expensive to extract, purify and fabricate than steel. So in a low-gravity situation the cost/benefit curve would favor steel construction. I got this idea from Asteroid Mining 101: Wealth for the New Space Economy by John Lewis of Deep Space Industries company.