Milky Way
Our home galaxy. Because we observe it from inside its disk, structure is reconstructed from many lines of sight rather than seen as a single external face-on portrait.
Flagship system · Field Atlas
Galaxy Field Atlas
Filter a compact source-backed set of examples by shape, viewing geometry and evidence state. Fewer records, stronger boundaries.
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Andromeda Galaxy (M31)
The nearest major galaxy to the Milky Way and a useful case for separating intrinsic structure from the angle at which we see it.
M101 · Pinwheel Galaxy
A classic face-on spiral that makes arm structure easy to inspect while reminding us that a favorable viewing angle can strongly shape classification confidence.
M87
A giant elliptical that shows why morphology alone is not the whole story: environment, central activity and multiwavelength observation add essential context.
NGC 1300
A prototypical barred spiral and an especially useful representation case because Hubble and Webb views emphasize different structures at different wavelengths.
Large Magellanic Cloud
A nearby irregular satellite whose uneven structure helps show why the label “irregular” is a morphological description, not a claim that the system lacks physical organization.
M104 · Sombrero Galaxy
A nearly edge-on spiral whose dust lane and bright bulge demonstrate how orientation can hide arm geometry and make a galaxy look unlike a face-on spiral.
NGC 4886
A lenticular example used by NASA to illustrate a disk-and-bulge system without obvious spiral arms.
Evidence Boundary System
Every important claim or tool result should tell you what kind of statement it is.
ObservedObserved
Directly described as an observed feature in the cited source or data product.
SourcedSourced
A factual statement supported by an inspectable institutional source.
InterpretiveInterpretive
ICU synthesis or diagram that organizes evidence without claiming to be direct observation.
SpeculativeSpeculative
A proposed explanation or scenario that should not be read as settled fact.
ExperientialExperiential
Output from a teaching interaction or guided thought experiment.
UnknownUnknown
A deliberately open question, unresolved parameter or absent evidence.