SOLAR SYSTEM

Detailed explanation-1: -A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. For this reason, some nebulae are called “star nurseries."

Detailed explanation-2: -Bright nebulae appear as faintly luminous glowing surfaces; they either emit their own light or reflect the light of nearby stars. Dark nebulae are very dense and cold molecular clouds; they contain about half of all interstellar material.

Detailed explanation-3: -Star Formation Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.

Detailed explanation-4: -Star-Forming Nebula These knots contain sufficient mass that the gas and dust can begin to collapse from gravitational attraction. As it collapses, pressure from gravity causes the material at the center to heat up, creating a protostar. One day, this core becomes hot enough to ignite fusion and a star is born.

Detailed explanation-5: -Nebulae are often star-forming regions, such as in the “Pillars of Creation” in the Eagle Nebula. In these regions, the formations of gas, dust, and other materials “clump” together to form denser regions, which attract further matter, and eventually will become dense enough to form stars.

Detailed explanation-6: -The radiation and solar winds of stars within emission nebulae carve and sculpt the nebula’s gas, creating caverns and pillars but also creating pressures on the gas clouds that can give rise to more starbirth.

Detailed explanation-7: -A stellar nebula is where stars are born, whereas a planetary nebula is what some stars form at the end of their lives. The beautiful Ring Nebula.