|
gptkbp:instanceOf
|
Astronomical Object
|
|
gptkbp:centralTo
|
gptkb:White_Dwarf
|
|
gptkbp:compatibleWith
|
Planets
|
|
gptkbp:composedOf
|
Ionized Gas
|
|
gptkbp:contains
|
Heavy Elements
|
|
gptkbp:contributedTo
|
Chemical Enrichment of Interstellar Medium
|
|
gptkbp:discoveredBy
|
gptkb:William_Herschel
1785
|
|
gptkbp:distanceFromEarth
|
Hundreds to Thousands of Light Years
|
|
gptkbp:emits
|
Visible Light
Ultraviolet Light
|
|
gptkbp:example
|
gptkb:Dumbbell_Nebula
gptkb:Helix_Nebula
gptkb:Ring_Nebula
|
|
gptkbp:form
|
gptkb:Dying_Star
|
|
gptkbp:foundIn
|
gptkb:Milky_Way
Other Galaxies
|
|
gptkbp:frequency
|
gptkb:Nitrogen
gptkb:Oxygen
gptkb:Hydrogen
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Planetary Nebula
|
|
gptkbp:lifespan
|
10,000 to 20,000 years
|
|
gptkbp:massLoss
|
Stellar Envelope Ejection
|
|
gptkbp:nameOrigin
|
Resembles Planet in Small Telescopes
|
|
gptkbp:observedBy
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:shape
|
Spherical
Bipolar
Elliptical
Stellar Winds
|
|
gptkbp:studiedIn
|
Astrophysics
18th Century
|
|
gptkbp:temperature
|
10,000 K to 30,000 K
|
|
gptkbp:type
|
Emission Nebula
|
|
gptkbp:bfsParent
|
gptkb:Dying_Star
gptkb:Red_Giant
|
|
gptkbp:bfsLayer
|
7
|