an alien spaceship flying over some small planets in the sky

spacecraft extraterrestrial cosmic expanse illuminated planets nebula starfield stellar distant galaxy exploration orbit universe voyage astral interstellar stellarium astrology astrosphere astrobiology astropilot starscape astrological astropause stargazing astroplanes starburst astrography astrogeology astrogate astrochemistry astrogeoscience astrodynamics ai generative illustration digital art