SOLAR SYSTEM

Detailed explanation-1: -How do stars form in a nebula? Nebulae are made of dust and gases-mostly hydrogen and helium. The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger.

Detailed explanation-2: -A planetary nebula is a region of cosmic gas and dust formed from the cast-off outer layers of a dying star. Despite their name, planetary nebulae have nothing to do with planets.

Detailed explanation-3: -Stars are born in dense clumps of gas, dust, and other material inside diffuse emission nebulae, also frequently referred to as “stellar nurseries". Hubble’s Pillars of Creation is in this category, as is the famous Orion Nebula ⁠-which you may well have seen for yourself through binoculars or a small telescope.

Detailed explanation-4: -The final class of galaxies consists of irregular galaxies. Irregular galaxies tend to contain lots of gas and dust. As a consequence, irregular galaxies contain copious star formation.

Detailed explanation-5: -These four nebulae (star-forming clouds of gas and dust) are known for their breathtaking beauty: the Eagle Nebula (which contains the Pillars of Creation), the Omega Nebula, the Trifid Nebula, and the Lagoon Nebula.