Statements (58)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:nebula
|
| gptkbp:bfsLayer |
3
|
| gptkbp:bfsParent |
gptkb:Hubble_Space_Telescope
gptkb:observatory |
| gptkbp:can_be |
Complex structures
Dust grains |
| gptkbp:common_name |
Planetary appearance in early telescopes
|
| gptkbp:contains |
Ionized gas
|
| gptkbp:depicted_in |
Hubble Space Telescope images
|
| gptkbp:ends_at |
A few thousand years
|
| gptkbp:excretion |
Outer layers of stars
|
| gptkbp:exhibits |
Symmetry
Variability Color variations Emission lines |
| gptkbp:form |
Evolved stars
|
| https://www.w3.org/2000/01/rdf-schema#label |
Planetary Nebulae
|
| gptkbp:is_a |
gptkb:observatory
|
| gptkbp:is_analyzed_in |
Chemical composition
Stellar winds Their ionization structure Their morphology |
| gptkbp:is_characterized_by |
Shell of gas
|
| gptkbp:is_essential_for |
Astrobiology
Cosmic chemical evolution Chemical enrichment of the interstellar medium Understanding stellar lifecycles Understanding the fate of stars. |
| gptkbp:is_found_in |
gptkb:Starburst_galaxies
Various wavelengths Star-forming regions Different galaxies |
| gptkbp:is_observed_in |
Radio telescopes
Infrared wavelengths Visible light |
| gptkbp:is_often_associated_with |
Star clusters
Supernova remnants Bipolar outflows |
| gptkbp:is_often_compared_to |
Spherical
|
| gptkbp:is_often_depicted_as |
gptkb:The_Milky_Way
Galaxies |
| gptkbp:is_often_used_in |
Astronomical research
Distances in astronomy |
| gptkbp:is_part_of |
Stellar evolution
|
| gptkbp:is_recognized_by |
Their spectral lines
|
| gptkbp:is_related_to |
White dwarfs
Planetary nebula hypothesis |
| gptkbp:is_studied_in |
gptkb:musician
gptkb:observatory Astrophysical simulations Stellar nucleosynthesis Mass loss in stars Their expansion rates |
| gptkbp:is_surrounded_by |
A central star
|
| gptkbp:key |
Understanding galaxy evolution
|
| gptkbp:located_in |
The galactic plane
|
| gptkbp:scientific_classification |
gptkb:painting
Type I or Type II |