SkipCaptcha
1,279
edits
Changes
Jump to navigation
Jump to search
mLine 20:
Line 20: − +
→Properties and Structure: Fix link
==Properties and Structure==
==Properties and Structure==
The nebula distance of some 2,030 [[light year]]s means its apparent size of 3.4x3.3 arc minutes corresponds to a physical [[radius]] of 0.91 ly.<ref name=constellation-guide>[http://www.constellation-guide.com/owl-nebula-messier-97/ Owl nebula: Messier 97] from constellation-guide.com</ref> There is great uncertainty in the exact distance to the nebula, with distances varying from 1,300 to 12,000 light years.<ref name=seds/> The gaseous component of the nebula has a mass estimated to be around 0.13-0.15 solar masses,<ref name=messier-objects/><ref name=seds/> though estimates vary, and is currently expanding at a rate somewhere between 27-39 km/s<ref name=constellation-guide/> The nebula is notably brighter than other planetary nebula, such as the [[Ring nebula]] of the [[Little Dumbbell nebula]].
The nebula distance of some 2,030 [[light year]]s means its apparent size of 3.4x3.3 arc minutes corresponds to a physical [[radius]] of 0.91 ly.<ref name=constellation-guide>[http://www.constellation-guide.com/owl-nebula-messier-97/ Owl nebula: Messier 97] from constellation-guide.com</ref> There is great uncertainty in the exact distance to the nebula, with distances varying from 1,300 to 12,000 light years.<ref name=seds/> The gaseous component of the nebula has a mass estimated to be around 0.13-0.15 solar masses,<ref name=messier-objects/><ref name=seds/> though estimates vary, and is currently expanding at a rate somewhere between 27-39 km/s<ref name=constellation-guide/> The nebula is notably brighter than other planetary nebula, such as the [[Ring nebula]] of the [[Little dumbbell nebula]].
Spectrums of the nebula have shown it contains a variety of different [[element]]s, including: [[hydrogen]], [[helium]], [[nitrogen]], [[oxygen]] and [[sulfur]].<ref name=messier-objects/> The [[density]] of particles within the nebula is believed to be around 100 particles per cubic centimetre.
Spectrums of the nebula have shown it contains a variety of different [[element]]s, including: [[hydrogen]], [[helium]], [[nitrogen]], [[oxygen]] and [[sulfur]].<ref name=messier-objects/> The [[density]] of particles within the nebula is believed to be around 100 particles per cubic centimetre.