People have already mentioned qntm, but I’ll put another plug in for “Valuable Humans in Transit” https://qntm.org/vhitaos
Sol Quy with monthly short stories: https://solquy.substack.com/p/111123-the-gunslinger
Adrian Tchaikovsky’s “Children of Time” series is fantastic.
Vernor Vinge can be a bit variable, but I would start with “A Fire Upon the Deep”