Galxies were once thought to be nebulaes
doppler shifts
Distant objects in space such as galaxies, quasars, and nebulae are commonly referred to as astronomical objects. These objects are typically located far beyond our solar system and can be observed through telescopes and other astronomical instruments.
Nebulae. These nebulae are often regions in space where new stars are forming due to the gravitational collapse of the gas and dust. They come in various shapes and sizes, and are some of the most beautiful and mesmerizing objects in the universe.
Other objects that can form from nebulae include stars, planets, moons, asteroids, and comets. These objects are formed through processes such as gravitational collapse, accretion of material, and condensation within the cloud of gas and dust that makes up a nebula.
Bright nebula are clouds of gas and dust that shine by reflected starlight. Dark nebula are clouds of dust and colder gas that can be seen by their silhouette against brighter objects behind them in the line of sight.
Astronomy is the study of objects beyond the Earth's atmosphere. It is refers to the planets, stars, galaxies, nebulae, and the moon.
Astronomy is the study of the universe (celestial objects such as stars, planets, comets, nebulae, star cluster, and galaxies).
There are billions of nebulae in the observable universe. These vast clouds of gas and dust are some of the most beautiful and intriguing objects in our cosmos, playing a crucial role in the formation of stars and planetary systems.
They get enegry by giant clouds of dust called nebulae.
emission nebulae and reflection nebulae.
emission nebulae and reflection nebulae.
A star is created once enough dust/gas gather up (called nebulae) and the gravity from a nearby star or shockwave from a nearby supernova causes it to contract. Once a star dies, it blows and becomes a nebulae again, recreating the entire process over and over again to repeat until the end of time. (unless the star becomes a black hole.)