![]() Some events, such as a passing star or a supernova explosion, will start the Nebula to collapse and begin forming. Over time the gas and dust will either be consumed by the star or form the orbiting planets. Young protostars in star formation area can be the source of the light in Emission Nebulae. Emission Nebulae formationĪn Emission Nebulae occurs when the star is being created or has died. Their sizes range from less than a light-year to several hundred light-years. Space.fm By studying the Nebula's spectrum, scientists and astronomers can determine different things about the Nebula, such as colours.Īn Emission Nebula can contain over 100 to 10,000 Solar Masses. North Western UniversityĮmission Nebulae are normally but not exclusively red because they contain hydrogen as their most common element. When the number of protons equals the number of electrons, the ion becomes charged. Ionisation is when a molecule or atom receives a negative or positive charge by gaining or losing an electron caused by an external source such as Ultra-Violet or UV Light. The Nebula lights up due to the ionisation of the atoms in the Nebula. The dust and gas in the Nebula became the star and planets we see today. ![]() It is believed that our Solar System was once a nebula of dust and cloud, but some event caused the Nebula to collapse and become an Emissions Nebula to start. A region of itself could have collapsed and started generating light. An Emission Nebula is an area of dust and cloud in space that is lit up by an internal light source.
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