Writing, KSP (why else am I here?), Spaceflight (crewed and robotic), Astrobiology and the search for habitable exoplanets, Interplanetary travel and colonization, Interstellar travel, and watching or reading plenty of science fiction and fantasy.
Still several days before a weekly update on the main post, but I've recently hit over 10,000 words on The Children Between Worlds. Less than a week in as well Maybe I'll get to 12k tomorrow.