"To conquer the universe" means to have total control or dominance over everything in the vast expanse of space, including all planets, stars, and galaxies. Full definition
But who's to say that saving your loose change for a pizza delivery one day isn't as important to you as conquering the universe was to Thanos? (gizmodo.com)
Adam 1, created in the image of God, does so by conquering the universe, imposing his knowledge, technology, and cultural institutions upon the world: religion affirms this apparently «secular» mandate. (firstthings.com)
Hype: Infinity was built on the idea of Thanos returning conquer the universe, but for the world at large he was already here thanks to his cameo in Marvel's The Avengers. (newsarama.com)