a star-shaped character (*) used in printing, often to mark something important or as a place to add an additional note

a large, irregularly shaped object made of rock and metal that orbits our Sun or another star

a transparent dome on top of an airplane where the navigator can make celestial observations

an ancient instrument used for estimating the altitude and predicting the position of celestial objects, such as the moon, other planets, and stars

a person trained to travel in a spacecraft

a scientist who studies the objects in the sky, including planets, galaxies, black holes, and stars

inconceivably large or costly; of or relating to astronomy

the branch of astronomy concerned with the physical and chemical properties of celestial bodies

the branch of physics that studies celestial bodies and the universe