The Sun forms and settles onto the main sequence
node
A region of a molecular cloud collapsed, passed through a protostellar phase and reached the core temperature at which the proton-proton chain supplies the entire radiated luminosity. The age is inferred chiefly from radiometric dating of the oldest solar-system solids rather than from observation of the Sun itself, and the figure is usually quoted as about 4.6 billion years with the calcium-aluminium-rich inclusions in meteorites providing the anchor.
A node is not a place. Drawing it on a map would assert something about the world that no stored fact supports.
Read in · 1
Evidence · 1
Timeline
No dated observations are stored for this object. Atlas shows what was observed and when — it does not infer a history.
Connections · 4
- The Sunconcerns
- Giant molecular cloudconcerns
- Protostarconcerns
- Main sequence (core hydrogen burning)concerns
Assembled narrative · 1
An assembled narrative is available for this object.
Observed changes · 0
No public Signals are attached to this object. Signals show what changed and when it was observed — never a direction or a rank.
Actions
/atlas?object=EVT_SUN_FORMS