By: JD Andersen
What is Nebula
Clouds of dust and gas. This looks like tiny smudges of light. Pressure variations within the clouds create clumps. A dwarf star lights up the surrounding cloud creates a glowing nebula.
This is clouds of dust that blocks light
Clouds of dust that reflects light from nearby star or stars, they are usually blue.
Clouds of high temp. of gas, usually red.
Shells of gas, sun might produce this in about 5 billion years
Aggregations of dozens of hundreds of young stars
95% of all stars we see in our galaxy will ultimately become a planetary nebula. They will eventually will become massive enough to form stars. The remaining materials are then believed to form planets and other planetary system objects.
These means that they are extended and contain no well-defined boundaries