I'd say that a space enthusiast would enjoy Starfield because you get to explore planets / moons in a semi-realistic universe. That was one of my favorite parts of Mass Effect 1. One of the things I kind of miss is that in Starfield there aren't verbose descriptions of the planets that expand the game's lore. I loved the variety of these in Mass Effect 1, where some were really interesting snippets of SciFi, ex:
Location: Milky Way / Hades Gamma / Antaeus System / Third planet Ploba is the second, and by far the larger, of Antaeus' two gas giants. Active scans by survey ships have returned tantalizing indications of massive, solid structures deep within the atmosphere, too regular in pattern to be...
masseffect.fandom.com
I remember one planet that was absolutely perfect for human colonization except that it was completely covered by thimble-sized bacteria that were very fatal to humans. Starfield having these kinds of descriptions that match the underlying planet would do a lot to add depth to planet exploration.