Nebula

Let’s talk about the most spectacular sights in astronomy, which we call nebula. Giant interstellar gas clouds known as nebulae are essential to the life cycle of stars. The Latin word nebula, which means "cloud," is used to describe any celestial object that, when viewed through a telescope, appears to like a cloud.??

This name included galaxies like our neighbour Andromeda, sometimes known as the "Andromeda nebula," when telescopes weren't as advanced as they are now. However, we now know that galaxies are made up of billions of stars instead of clouds, thanks to the use of modern telescopes. As a result, astronomers only use the term "nebula" to refer to actual clouds of gas and dust that are found within our own galaxy.

The interstellar medium, the area between stars, is where nebula are frequently seen. Only about one atom is present in this area every cubic centimetre on average. The density, however, can be much higher than this in some areas—high enough to be visible through a telescope. Nebula can be classified into a number of various categories according to how they form and what they are made of. Most nebula are mostly composed of gas, which has the ability to glow with its own light, producing the vivid displays we are accustomed to.

Telescopes like the Hubble Space Telescope and the James Webb Space Telescope (JWST) utilise infrared light released by nebulae to make images that depict the amazing nature of nebulae.?The vast cosmic clouds of gas and dust that make up a nebula can obstruct the visible light emitted by stars forming in and around it. As a result, researchers must focus on other light wavelengths that are emitted from the nebula, like infrared radiation.