Although the ejection of a planetary nebula and the outburst of a nova are distinctly different phenomena, they belong, nevertheless, in the same class of events, the kinetic energy of a planetary nebula being of the same order as that of a nova shell.
Which is an example of a planetary nebula?
Explanation: The Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky.
What type of nebula is a planetary nebula?
emission nebula A planetary nebula (PN, plural PNe), is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives. The term "planetary nebula" is a misnomer because they are unrelated to planets.
Is supernova and planetary nebula the same?
No, they are two entirely different things. A planetary nebula is born when a low mass star dies (low mass means less than about 8 times the mass of the Sun), while the supernova is the death of a massive star.
What forms from a planetary nebula?
The white dwarf gives of ultraviolet radiation which lights up the layers of gas around the star. Over time, the material from the planetary nebula is scattered into space. Eventually it will form part of the clouds of dust and gas where new stars form. Planetary nebula last just a few tens of thousands of years.
What is the closest planetary nebula?
Helix Nebula Helix Nebula: The Helix Nebula in the constellation Aquarius is one of the closest planetary nebulae to Earth. It has a similar color and shape to the Ring and the Dumbbell Nebulae, and the central star is easily visible. Notice also that several galaxies can be seen through the thin layers of this nebula.
What stars produce planetary nebula?
Smaller stars like our sun end their lives by ejecting their outer layers of gas into space over the course of about 10,000 years, leaving behind the star's hot core — a white dwarf. Radiation from the white dwarf causes the gas to glow, creating a unique and beautiful formation called a planetary nebula.
What is a planetary Nova?
A nova is an explosion from the surface of a white-dwarf star in a binary star system. A nova occurs when the white dwarf, which is the dense core of a once-normal star, “steals” gas from its nearby companion star. When enough gas builts up on the surface of the white dwarf it triggers an explosion.
Is the Orion Nebula a planetary nebula?
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion….Orion Nebula.
| Diffuse nebula | |
|---|---|
| Radius | 12 ly |
| Absolute magnitude (V) | — |
| Notable features | Trapezium cluster |
| Designations | NGC 1976, M42, LBN 974, Sharpless 281 |
Do planetary nebulas explode?
When a star like our Sun dies, it doesn't explode into a supernova or collapse into a black hole. Instead, it gently sheds its outer layers, which form a beautiful cloud called a “planetary nebula”, while the dying star's core becomes a white dwarf.