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59 registry assets sequenced for academy learners. Each item keeps manual progress, source-grounded AI help gates, and visible content gaps.
Subject progression ladder
4 audience steps; 55 lessons across the ladder; 5 owner evidence items required.
kids
14 lessons; 1 variant; 1 locale.
/library/kids/astronomyNext audience route: /library/junior/astronomy
junior
10 lessons; 1 variant; 1 locale.
/library/junior/astronomyNext audience route: /library/learn/astronomy
learn
15 lessons; 1 variant; 1 locale.
/library/learn/astronomyNext audience route: /library/academy/astronomy
Local ladder gates
No local ladder gaps reported
Owner progression policy
5 owner evidence items required; 5 owner evidence gaps.
Progression claims
Progression readiness claim blocked
Local subject/audience ladder evidence only; owner curriculum placement, age appropriateness, localization quality, AI readiness, and production readiness are not proven.
Evidence gates
3 blockers; 11 owner evidence items required before readiness claims.
Local checks
12 local checks ready
58 quiz items; 58 answer keys; 58 explanations.
16 sitemap routes; 16 AI context routes; 0 candidate routes; no dead links.
Standards snapshot checked 2026-06-24
Owner evidence
Child/guardian review not required
Owner evidence missing
Route owner evidence missing
Production evidence
Production evidence missing
Assessment telemetry evidence missing
Production discoverability evidence missing
Blockers: assessment_attempt_telemetry_required_before_readiness_claim, production_telemetry_evidence_required_before_readiness_claim, provenance_review_required_before_ai_readiness_claim
Source rights
16 lessons need rights review; 48 provenance blockers.
Source paths are locally ready for review
Owner rights clearance pending
Attribution clearance pending
AI provenance clearance pending
Rights and AI-provenance writes locked until owner evidence is present
Rights blockers: ai_provenance_policy_unresolved_without_license: 16, attribution_missing: 16, license_or_rights_policy_missing: 16
Local source-path and provenance evidence only; owner-approved license, attribution, and AI-provenance evidence are required before field writes, AI readiness, or publication claims.
Local report evidence only; this does not prove owner approval, guardian approval, live telemetry, release, deployment, or production readiness.
Production evidence rollup
16 lessons; 4 missing evidence categories; 42 evidence items required; 6 blockers.
Local contracts
4 local categories ready of 4 categories.
All local contracts ready
Missing evidence categories
assessment_telemetry, progress_telemetry, publication_rights, real_ai_eval
Review priority: high
Production review routes
First: /library/academy/astronomy/en/lesson/gravity-and-orbital-mechanics
Last: /library/academy/astronomy/en/lesson/newtonian-universal-gravitation
AI context: /api/library/ai-help-context?slug=academy%2Fastronomy%2Fen%2Flesson%2Fgravity-and-orbital-mechanics
Safest next command
assessment_telemetry: 3 evidence items required. Command: node -e "const r=require('./docs/local-content-surface-map.json'); console.log(JSON.stringify(r.entries.filter(e=>e.surface==='/library/academy/astronomy').map(e=>({slug:e.slug,assessment_shape:e.assessment_shape,completion_criteria:e.completion_criteria,remediation_route:e.learning_loop.remediation_route})),null,2))"
assessment_telemetry: 3 evidence items required; local contract ready.
progress_telemetry: 4 evidence items required; local contract ready.
publication_rights: 6 evidence items required; local contract ready.
real_ai_eval: 29 evidence items required; local contract ready.
Production blockers: ai_provenance_policy_unresolved_without_license, assessment_attempt_telemetry_required_before_readiness_claim, attribution_missing, license_or_rights_policy_missing, production_telemetry_evidence_required_before_readiness_claim
local generated queue only; requires production telemetry, live RLS/ownership, Search Console/crawl, owner route policy, rights clearance, and real AI eval evidence before readiness claims
Publication rights review
16 lessons in surface; 16 lessons affected; 48 provenance blockers; 6 owner evidence items required.
Local review evidence
Source paths are locally ready for review
Review priority: highest
Owner evidence packets
ai_provenance_policy_unresolved_without_license: 16 affected lessons; 2 evidence items required.
attribution_missing: 16 affected lessons; 2 evidence items required.
license_or_rights_policy_missing: 16 affected lessons; 2 evidence items required.
Review routes
First: /library/academy/astronomy/en/lesson/gravity-and-orbital-mechanics
Last: /library/academy/astronomy/en/lesson/newtonian-universal-gravitation
AI context: /api/library/ai-help-context?slug=academy%2Fastronomy%2Fen%2Flesson%2Fgravity-and-orbital-mechanics
Blocked claims
Publication readiness claim blocked
AI readiness claim blocked
Rights blockers: ai_provenance_policy_unresolved_without_license: 16, attribution_missing: 16, license_or_rights_policy_missing: 16
Local source-path and blocker evidence only; owner-approved license, attribution, AI-provenance policy, release, deployment, real AI eval, and publication readiness are not proven.
Telemetry evidence
58 quiz items; 16 progress signals; 3 assessment evidence items required; 4 progress evidence items required.
Assessment shape
58 quiz items; no missing answer keys; no missing explanations.
Assessment source contract ready
Progress loop
16 feedback paths; 16 review routes; 16 remediation routes; 16 manual advance gates.
Progress loop locally ready
Source contracts
16 local contract-only signals; 16 AI measurement signals.
Progress, AI transparency, and bridge contracts ready
Production evidence
Production assessment telemetry missing: 3 evidence items required.
Production progress telemetry missing: 4 evidence items required.
Telemetry blockers: assessment_attempt_telemetry_required_before_readiness_claim, production_telemetry_evidence_required_before_readiness_claim
Local assessment and progress source-contract evidence only; production telemetry samples, live RLS/ownership proof, mastery interpretation, release, deployment, and readiness are not proven.
AI eval review
16 lessons; 27 expected payload fields; 16 context routes; 16 grounding signals.
Payload coverage
16 source paths; 16 objective sets; 16 assessment signals; 16 completion criteria.
Local payload contract ready
Safety and measurement signals
16 privacy signals; 16 age guardrails; 16 measurement signals; 16 remediation policies.
Review priority: high
Local eval contracts
API contract verifier ready
AI usage transparency verifier ready
Eval partnership source evidence ready
Eval readiness claims
AI eval readiness claim blocked
AI context: /api/library/ai-help-context?slug=academy%2Fastronomy%2Fen%2Flesson%2Fgravity-and-orbital-mechanics
AI eval blockers: real_ai_eval_required_before_production_readiness_claim
Local payload, transparency, and eval-partner source contracts only; real model transcripts, rubric scores, privacy review, production telemetry, release, deployment, and tutor readiness are not proven. Safest next command: node -e "const r=require('./docs/local-content-surface-map.json'); console.log(JSON.stringify(r.ai_context_payload_review_batches.map(b=>({surface:b.surface,ai_eval_partnership_local_evidence_ready:b.ai_eval_partnership_local_evidence_ready,real_ai_eval_evidence_present:b.real_ai_eval_evidence_present,blockers:b.review_blockers})),null,2))"
AI tutor handoff
16 AI-enabled lessons; 16 source-grounded contexts; 27 expected payload fields; 42 production evidence items required.
Context payload
16 context routes; 16 grounding paths; 16 privacy signals; 16 age guardrails; 16 measurement signals.
Payload, transparency, and eval-partner contracts are locally ready
Tutor learning loop
16 completion feedback paths; 16 review routes; 16 remediation routes; 16 manual advance gates.
Manual invocation required
Age, privacy, and safety
Child AI owner/guardian review not required
Privacy summary ready; raw prompt/response summaries blocked
Child AI safety evidence missing
Real AI eval
Real AI eval evidence missing: 35 evidence items required.
AI tutor readiness claim blocked
AI tutor blockers: ai_provenance_policy_unresolved_without_license, assessment_attempt_telemetry_required_before_readiness_claim, attribution_missing
AI production evidence gaps: assessment_telemetry, progress_telemetry, publication_rights, real_ai_eval
Local AI tutor handoff evidence only; payload contracts, transparency checks, and source grounding do not prove real model quality, child AI approval, production telemetry, deployment, release, or production tutor readiness.
Curriculum sequence
1 sequence start; 1 sequence end; 15 previous links; 15 next links.
Backbone alignment
8 matched backbone lessons of 8; no backbone lessons missing; 8 extra local lessons.
Expanded or changed sequence needs owner policy
Manual control
16 manual advance gates; 16 auto-advance blocks.
Owner sequence policy
Owner sequence policy evidence missing: 4 evidence items required.
Policy: expanded local sequence requires owner policy
Sequence blockers: expanded_local_sequence_policy_required, authored_sequence_policy_required_before_curriculum_readiness_claim
Local route-link and backbone comparison only; owner-approved curriculum order, prerequisite policy, and production readiness are not proven.
Learner journey paths
16 resume routes; 16 review routes; 16 remediation routes; 15 next-step routes; 1 sequence end.
Completion
16 completion feedback paths; 16 manual completion gates.
Learner control
16 manual advance gates; 16 auto-advance blocks.
Manual advance remains required
Production gaps
4 production evidence categories missing; 42 evidence items required.
Local journey evidence only; production telemetry, owner route policy, publication rights, and real AI eval evidence are still required before readiness claims.
Media, characters, and citations
16 media scenes; 16 drills; 16 practice sets; 16 quizzes; 16 feedback paths.
Characters and citations
16 character paths; 16 citation paths; 16 concept maps; 16 source paths; 16 AI-grounded paths.
Character and citation source checks ready
Media control
16 manual advance gates; 16 auto-advance blocks.
Production media evidence missing
Age and safety
Not marked as child privacy surface
Guardian review evidence pending
Media blockers: ai_provenance_policy_evidence_required_before_readiness_claim, media_practice_telemetry_evidence_required_before_readiness_claim, owner_rights_attribution_evidence_required_before_readiness_claim
Local media, character, citation, source-path, and manual-control evidence only; owner rights, guardian review, production telemetry, release, deployment, and production readiness are not proven.
Owner review handoff
10 local gates ready of 10; 12 owner evidence categories missing; 57 evidence items required.
Local gates
10 local gates ready of 10.
Owner evidence
12 owner evidence categories missing; 57 evidence items required.
Evidence categories: ai_provenance_policy, assessment_telemetry, companion_alignment, manual_choice_navigation_review
Claims and writes
Production readiness claim blocked
Owner-gated writes locked
Owner review blockers: ai_provenance_policy_evidence_required_before_readiness_claim, ai_provenance_policy_unresolved_without_license, assessment_attempt_telemetry_required_before_readiness_claim
Owner-review handoff evidence only; local gates and packet references do not prove owner approval, guardian approval, production telemetry, real AI eval, deployment, release, or production readiness.
Companion paths
2 manual companion paths are discoverable
2 required paths; 2 routes ready; 2 alignment gaps.
Owner alignment still required before readiness claims.
Companion blockers: flashcard_sibling_content_alignment_review_required, exam_sibling_content_alignment_review_required
Companion owner alignment
16 lessons; 2 missing alignment types; 6 owner evidence items required.
Review priority: high
Route types
Ready route types: flashcards, exams
Companion targets
flashcards: /learn/flashcards
exams: /prep, /learn/mock-exam
Manual-choice review
Companion routes are locally discoverable.
Navigation from the lesson experience into companion content must stay learner-chosen and must not auto-advance assessments, media, payment, consent, or AI-uncertain flows
Owner alignment blockers: flashcard_sibling_content_alignment_review_required, exam_sibling_content_alignment_review_required
exams
Route evidence is locally discoverable.
Alignment review required: 3 owner evidence items
Local route evidence only; per-lesson companion mapping and curriculum alignment still need owner review before readiness claims.
flashcards
Route evidence is locally discoverable.
Alignment review required: 3 owner evidence items
Local route evidence only; per-lesson companion mapping and curriculum alignment still need owner review before readiness claims.
library_subject_progress_summary
library_subject_progress_percentlibrary_subject_progress_local_only
Astrobiology and Conditions for Life
AI help: source-grounded
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Astronomy Concept 40: The Hertzsprung-Russell Diagram
AI help: source-grounded
Before you start: Complete or review Astrobiology and Conditions for Life
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Astrophysical Jets and Accretion Disks
AI help: source-grounded
Before you start: Complete or review Astronomy Concept 40: The Hertzsprung-Russell Diagram
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Big Bang Theory and Cosmic Microwave Background
AI help: source-grounded
Before you start: Complete or review Astrophysical Jets and Accretion Disks
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Binary Star Systems and Mass Determination
AI help: source-grounded
Before you start: Complete or review Big Bang Theory and Cosmic Microwave Background
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Black Holes: Formation and Properties
AI help: source-grounded
Before you start: Complete or review Binary Star Systems and Mass Determination
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Celestial Sphere and Coordinate Systems
AI help: source-grounded
Before you start: Complete or review Black Holes: Formation and Properties
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Cosmic Distance Ladder Techniques
AI help: source-grounded
Before you start: Complete or review Celestial Sphere and Coordinate Systems
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Cosmic Inflation Theory
AI help: source-grounded
Before you start: Complete or review Cosmic Distance Ladder Techniques
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Cosmic Scales: How Orbits Let Us Weigh the Stars
AI help: source-grounded
Before you start: Complete or review Cosmic Inflation Theory
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Cosmological Principles and the Expanding Universe
AI help: source-grounded
Before you start: Complete or review Cosmic Scales: How Orbits Let Us Weigh the Stars
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Dark Energy and the Accelerating Universe
AI help: source-grounded
Before you start: Complete or review Cosmological Principles and the Expanding Universe
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Electromagnetic Spectrum and Astronomical Observations
AI help: source-grounded
Before you start: Complete or review Dark Energy and the Accelerating Universe
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Exoplanet Detection Methods and Characterization
AI help: source-grounded
Before you start: Complete or review Electromagnetic Spectrum and Astronomical Observations
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Formation and Characteristics of White Dwarfs
AI help: source-grounded
Before you start: Complete or review Exoplanet Detection Methods and Characterization
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Galactic Structure and Classification
AI help: source-grounded
Before you start: Complete or review Formation and Characteristics of White Dwarfs
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Galaxies, Galactic Rotation, and the Hidden Mass
AI help: source-grounded
Before you start: Complete or review Galactic Structure and Classification
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Galaxy Evolution and Interaction
AI help: source-grounded
Before you start: Complete or review Galaxies, Galactic Rotation, and the Hidden Mass
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
General Relativity and Its Astrophysical Implications
AI help: source-grounded
Before you start: Complete or review Galaxy Evolution and Interaction
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gravitational Lensing and Its Applications
AI help: source-grounded
Before you start: Complete or review General Relativity and Its Astrophysical Implications
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Hertzsprung-Russell Diagram and Stellar Evolution
AI help: source-grounded
Before you start: Complete or review Gravitational Lensing and Its Applications
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
High Energy Astrophysics: Gamma-ray Bursts
AI help: source-grounded
Before you start: Complete or review Hertzsprung-Russell Diagram and Stellar Evolution
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
How Astronomers Chain Distance Methods Across the Cosmos
AI help: source-grounded
Before you start: Complete or review High Energy Astrophysics: Gamma-ray Bursts
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
How Stellar Mass Decides a Star's Final Fate
AI help: source-grounded
Before you start: Complete or review How Astronomers Chain Distance Methods Across the Cosmos
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Hubble's Law and Redshift
AI help: source-grounded
Before you start: Complete or review How Stellar Mass Decides a Star's Final Fate
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Interstellar Medium and Nebulae
AI help: source-grounded
Before you start: Complete or review Hubble's Law and Redshift
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Kepler's Laws of Planetary Motion
AI help: source-grounded
Before you start: Complete or review Interstellar Medium and Nebulae
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Kepler's Three Laws Describe Planetary Orbits
AI help: source-grounded
Before you start: Complete or review Kepler's Laws of Planetary Motion
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Large Scale Structure of the Universe
AI help: source-grounded
Before you start: Complete or review Kepler's Three Laws Describe Planetary Orbits
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Life Cycle of Low and Intermediate Mass Stars
AI help: source-grounded
Before you start: Complete or review Large Scale Structure of the Universe
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Light Is the Astronomer's Only Messenger
AI help: source-grounded
Before you start: Complete or review Life Cycle of Low and Intermediate Mass Stars
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Neutron Stars and Pulsars
AI help: source-grounded
Before you start: Complete or review Light Is the Astronomer's Only Messenger
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Newton's Law of Universal Gravitation
AI help: source-grounded
Before you start: Complete or review Neutron Stars and Pulsars
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Nuclear Fusion Processes in Stars
AI help: source-grounded
Before you start: Complete or review Newton's Law of Universal Gravitation
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Nucleosynthesis in the Early Universe
AI help: source-grounded
Before you start: Complete or review Nuclear Fusion Processes in Stars
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Phases and Motions of the Moon
AI help: source-grounded
Before you start: Complete or review Nucleosynthesis in the Early Universe
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Properties and Classification of Stars
AI help: source-grounded
Before you start: Complete or review Phases and Motions of the Moon
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Radio Astronomy and Pulsar Timing
AI help: source-grounded
Before you start: Complete or review Properties and Classification of Stars
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Reading Starlight: Spectra, Composition, and the Doppler Shift
AI help: source-grounded
Before you start: Complete or review Radio Astronomy and Pulsar Timing
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Redshift and Hubble's Law Show an Expanding Universe
AI help: source-grounded
Before you start: Complete or review Reading Starlight: Spectra, Composition, and the Doppler Shift
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Rotation Curves and Dark Matter Evidence
AI help: source-grounded
Before you start: Complete or review Redshift and Hubble's Law Show an Expanding Universe
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Solar System Structure and Planetary Characteristics
AI help: source-grounded
Before you start: Complete or review Rotation Curves and Dark Matter Evidence
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Space Telescopes and Instrumentation
AI help: source-grounded
Before you start: Complete or review Solar System Structure and Planetary Characteristics
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Spectral Lines Reveal What Stars Are Made Of
AI help: source-grounded
Before you start: Complete or review Space Telescopes and Instrumentation
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Spectroscopy in Astronomy: Absorption and Emission Lines
AI help: source-grounded
Before you start: Complete or review Spectral Lines Reveal What Stars Are Made Of
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Star Clusters: Open and Globular
AI help: source-grounded
Before you start: Complete or review Spectroscopy in Astronomy: Absorption and Emission Lines
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Stars Forge Elements Through Nuclear Fusion
AI help: source-grounded
Before you start: Complete or review Star Clusters: Open and Globular
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Stellar Evolution and Nucleosynthesis
AI help: source-grounded
Before you start: Complete or review Stars Forge Elements Through Nuclear Fusion
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Stellar Evolution: The Life Cycle of Stars
AI help: source-grounded
Before you start: Complete or review Stellar Evolution and Nucleosynthesis
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Stellar Parallax and Distance Measurement
AI help: source-grounded
Before you start: Complete or review Stellar Evolution: The Life Cycle of Stars
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Supernovae Types and Mechanisms
AI help: source-grounded
Before you start: Complete or review Stellar Parallax and Distance Measurement
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
The Celestial Sphere: How Earth's Spin Moves the Sky
AI help: source-grounded
Before you start: Complete or review Supernovae Types and Mechanisms
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
The H-R Diagram Maps Stars by Luminosity and Temperature
AI help: source-grounded
Before you start: Complete or review The Celestial Sphere: How Earth's Spin Moves the Sky
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
The Lives and Deaths of Stars: How Mass Decides Everything
AI help: source-grounded
Before you start: Complete or review The H-R Diagram Maps Stars by Luminosity and Temperature
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Three Clues to a Hot, Expanding Universe
AI help: source-grounded
Before you start: Complete or review The Lives and Deaths of Stars: How Mass Decides Everything
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Three Pillars of Evidence for the Big Bang
AI help: source-grounded
Before you start: Complete or review Three Clues to a Hot, Expanding Universe
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
Universal Gravitation Governs Every Orbit
AI help: source-grounded
Before you start: Complete or review Three Pillars of Evidence for the Big Bang
To finish: Review objectives and instruction
What happens next
1 review path, 1 remediation path, 1 next-step path, and 4 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
learning-method/sketch_it_back/astronomy/academy/en/b20741cad8
AI help: source-grounded
Before you start: Complete or review Universal Gravitation Governs Every Orbit
To finish: Finish the task manually
What happens next
1 review path, 1 remediation path, 1 next-step path, and 3 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback
learning-method/sketch_it_back/astronomy/academy/en/c03dad5358
AI help: source-grounded
Before you start: Complete or review learning-method/sketch_it_back/astronomy/academy/en/b20741cad8
To finish: Finish the task manually
What happens next
1 review path, 1 remediation path, 0 next-step paths, and 3 completion criteria are mapped for this lesson.
Gate: canonical_target_web_missing_uses_library_fallback