Planets, small bodies ( asteroid, comet, meteoroid) solar systems ( we live in milky way), and galaxies made of dust and small particles. We believe most galaxies have black holes (timeless area in space that pulls matter in) in the center and that makes the galaxies spin.
Planets but the look like stars
spacex
Yes, an example is asteroids.
It moves in Time, the fourth dimension.
Stars, satellites, and something else
No. Astronomy has to do with stars, planets, comets, and everything else that has to do with space. The orbits of planets, constellations, and history of space exploration is also a part of astronomy.
The universe is mostly made up of dust, stars and empty space. The universe is so large and grows daily, so that means that even more empty space is added to the universe daily.
floating clouds of gas, asteroids, comets etc etc, a very large number of things. strangely, most of space though is well, space, or in other words, nothingness.
"Else"? Besides what?
Galaxies - massive collections of stars, gas, and dust held together by gravity. Nebulae - clouds of gas and dust in space where new stars are born. Black holes - regions of space with such strong gravitational forces that nothing, not even light, can escape.
By studying stars, planets, moons, black holes, nebulae, asteroids, comets, and everything else in space.
-Stars -Asteroids -planets And everything else in space.