Thanks to Viktor Ambartsumian, a Soviet physicist, who proposed the existence of a protostar. Because of that much is known today about how stars are formed, dispelling unfounded beliefs of their origin.

The Omega nebula is a star-forming region in the constellation of Sagittarius. It is also called as the Swan Nebula and the Horseshoe Nebula, as it takes the shape of both a swan and a horse shoe. It was discovered by Swiss astronomer Philippe Loys de Chéseaux in 1745-1746. It is just one of bodies with nebulae property on his list. It was also referred to as Messier 17 (M17), in respect to its cataloguer Charles Messier in 1764.

Outgassing is a process wherein gas is released through sublimation, evaporation and phase conversion. It is also simply described to as releasing solid gas. Offgassing, is similar to outgassing only that the latter refers to indoor air quality.

What is a Giant Molecular Cloud? Well, first off, a molecular cloud is basically a cloud up in the space, and is composed mainly of molecular hydrogen and helium. And a Giant Molecular Cloud is a molecular cloud that is a hundred times the mass of our sun. It’s like about 100,000 suns can fit in. They are so large they reach up to 300 light years in diameter. So the word giant there is an understatement.

There are three states of matter we are familiar with: solid, liquid, and gas. We don’t even need to define them anymore; their names are their definitions. But there’s the fourth state of matter which many aren’t too knowledgeable about (some may not even know there’s such a thing). It’s called plasma or ionized gas.

The flow of neutral or charged gas ejected from a star’s upper atmosphere is referred to as the stellar wind. It is distinguished by the less collimated bipolar outflow characteristics of a young star. However, stellar winds are not spherically symmetric.

Sublimation refers to the process wherein solid object directly transforms into gaseous state without passing liquefaction. There are many substances that are known to undergo this process such as the element iodine. Under extreme temperatures, iodine is converted into a gaseous state without melting first. This process explains the presence of icy cap rings and other components in some heavenly bodies. It may even be helpful to explain the formation of other heavenly bodies.