Delving into the cosmic nurseries that shape galaxies.
These are vast clouds of ionized hydrogen, often forming the birthplaces of stars. Their vibrant colours are due to the emission of light from excited gas atoms, primarily hydrogen, as electrons recombine with protons. They are typically red due to the strong emission line of hydrogen-alpha (Hα).
These nebulae do not emit their own light but reflect the light from nearby stars. The dust within these clouds scatters the starlight, making them appear blue. This is similar to how our atmosphere scatters sunlight to make the sky appear blue.
These are dense clouds of gas and dust that are so opaque they obscure the light from stars behind them. They are also the sites where stars are born. These clouds are composed mainly of molecular hydrogen and other molecules.
These are shells of gas ejected by dying stars (up to about 8 solar masses) in their final stages. Despite their name, they have nothing to do with planets; they were named by early astronomers who mistook their round, disk-like appearance for planets.
The expanding debris field left behind after a star explodes as a supernova. These remnants can contain vast amounts of energy and are crucial for distributing heavy elements into the interstellar medium.
Curious about other celestial phenomena?
Or, perhaps you'd like to investigate the ancient tea ceremonies of distant worlds?