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OpenStem
@openstem · Joined Jul 2026
7420 public items8 groups
Collection4 items
01Astronomy · L3 · Aurora & Magnetosphere Physics
02Astronomy · L3 · Aurora & Magnetosphere Physics
03Astronomy · L3 · From Solar Wind to Auroral Light
+1 moreAstronomy · L3 · Aurora & Magnetosphere Physics
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Astronomy · L3 · Aurora & Magnetosphere PhysicsCollection3 items
01Astronomy · L3 · Moon Formation & the Giant Impact
02Astronomy · L3 · Moon Formation & the Giant Impact
03Astronomy · L3 · Moon Formation & the Giant Impact
Astronomy · L3 · Moon Formation & the Giant Impact
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Astronomy · L3 · Moon Formation & the Giant ImpactCollection3 items
01Astronomy · L3 · Star Clusters & Stellar Populations
02Astronomy · L3 · Star Clusters & Stellar Populations
03Astronomy · L3 · Star Clusters & Stellar Populations
Astronomy · L3 · Star Clusters & Stellar Populations
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Astronomy · L3 · Star Clusters & Stellar PopulationsCollection3 items
01Astronomy · L3 · Cosmic Rays & High-Energy Astrophysics
02Astronomy · L3 · Cosmic Rays & High-Energy Astrophysics
03Astronomy · L3 · Cosmic Rays & High-Energy Astrophysics
Astronomy · L3 · Cosmic Rays & High-Energy Astrophysics
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Astronomy · L3 · Cosmic Rays & High-Energy AstrophysicsCollection4 items
01Astronomy · L3 · Gravitational Lensing
02Astronomy · L3 · Gravitational Lensing
03Astronomy · L3 · Strong Lensing or Weak Lensing?
+1 moreAstronomy · L3 · Gravitational Lensing
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Astronomy · L3 · Gravitational LensingCollection4 items
01Astronomy · L3 · Asteroid Impacts & Craters
02Astronomy · L3 · Asteroid Impacts & Craters
03Astronomy · L3 · Assessing an Asteroid Impact Hazard
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Astronomy · L3 · Asteroid Impacts & CratersCollection4 items
01Astronomy · L3 · History of Astronomy: Paradigm Shifts
02Astronomy · L3 · History of Astronomy: Paradigm Shifts
03Astronomy · L3 · Five Paradigm Shifts in Astronomy
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Astronomy · L3 · History of Astronomy: Paradigm ShiftsCollection3 items
01Astronomy · L3 · Exosolar System Architecture
02Astronomy · L3 · Exosolar System Architecture
03Astronomy · L3 · Exosolar System Architecture
Astronomy · L3 · Exosolar System Architecture
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Astronomy · L3 · Exosolar System ArchitectureCollection4 items
01Astronomy · L3 · Solar System Formation: The Nebular Hypothesis
02Astronomy · L3 · Solar System Formation: The Nebular Hypothesis
03Astronomy · L3 · From Molecular Cloud Core to Planetary System
+1 moreAstronomy · L3 · Solar System Formation: The Nebular Hypothesis
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Astronomy · L3 · Solar System Formation: The Nebular HypothesisCollection4 items
01Astronomy · L3 · Celestial Coordinates & Precession
02Astronomy · L3 · Celestial Coordinates & Precession
03Astronomy · L3 · Right Ascension or Declination?
+1 moreAstronomy · L3 · Celestial Coordinates & Precession
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Astronomy · L3 · Celestial Coordinates & PrecessionCollection4 items
01Astronomy · L3 · Star Formation & Molecular Clouds
02Astronomy · L3 · Star Formation & Molecular Clouds
03Astronomy · L3 · From Molecular Cloud to Star
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Astronomy · L3 · Star Formation & Molecular CloudsCollection4 items
01Astronomy · L3 · Planetary Ring & Moon Systems
02Astronomy · L3 · Planetary Ring & Moon Systems
03Astronomy · L3 · Regular Moon or Irregular Moon?
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Astronomy · L3 · Planetary Ring & Moon SystemsCollection4 items
01Astronomy · L3 · Nebula Types
02Astronomy · L3 · Nebula Types
03Astronomy · L3 · Which Type of Nebula?
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Astronomy · L3 · Nebula TypesCollection2 items
01Astronomy · L4 · The Solar System — Planets & Their Properties
02Astronomy · L4 · The Solar System: planets, asteroid belt, and Kuiper Belt
Astronomy · L4 · The Solar System
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Astronomy · L4 · The Solar SystemCollection4 items
01Astronomy · L4 · Orbital Mechanics — Vis-Viva & Transfer Orbits
02Astronomy · L4 · Orbital mechanics: vis-viva, orbital energy, and Hohmann transfers
03Astronomy · L4 · Choosing an orbital-energy regime from vis-viva
+1 moreAstronomy · L4 · Orbital Mechanics — Vis-Viva & Transfer Orbits
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Astronomy · L4 · Orbital Mechanics — Vis-Viva & Transfer OrbitsCollection4 items
01Astronomy · L4 · Tidal Forces, the Roche Limit & Tidal Locking
02Astronomy · L4 · Tidal forces: differential gravity, the Roche limit, and tidal locking
03Astronomy · L4 · From differential gravity to tidal locking
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Astronomy · L4 · Tidal Forces, Roche Limit & Tidal LockingCollection4 items
01Astronomy · L4 · Blackbody Radiation & the Luminosity-Radius-Temperature Relation
02Astronomy · L4 · Blackbody radiation: Stefan-Boltzmann, Wien's law, and stellar L-R-T
03Astronomy · L4 · From blackbody temperature to observable stellar properties
+1 moreAstronomy · L4 · Blackbody Radiation & the L-R-T Relation
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Astronomy · L4 · Blackbody Radiation & the L-R-T RelationCollection3 items
01Astronomy · L4 · Stellar Structure Equations
02Astronomy · L4 · Stellar structure: hydrostatic equilibrium and mass continuity
03Astronomy · L4 · Stellar Structure Equations — 4 Q
Astronomy · L4 · Stellar Structure Equations
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Astronomy · L4 · Stellar Structure EquationsCollection3 items
01Astronomy · L4 · Galactic Dynamics & the Rotation Curve Problem
02Astronomy · L4 · Galactic dynamics: the rotation curve problem and dark matter
03Astronomy · L4 · Galactic Dynamics & Dark Matter — 4 Q
Astronomy · L4 · Galactic Dynamics & Dark Matter
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Astronomy · L4 · Galactic Dynamics & Dark MatterCollection3 items
01Astronomy · L4 · The Cosmic Distance Ladder, Quantitatively
02Astronomy · L4 · The cosmic distance ladder: parallax, Cepheids, and Type Ia supernovae
03Astronomy · L4 · The Cosmic Distance Ladder, Quantitatively — 4 Q
Astronomy · L4 · The Cosmic Distance Ladder, Quantitatively
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Astronomy · L4 · The Cosmic Distance Ladder, QuantitativelyCollection4 items
01Astronomy · L4 · General Relativity Basics
02Astronomy · L4 · General relativity: the equivalence principle and classic tests
03Astronomy · L4 · From the equivalence principle to observational tests of GR
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Astronomy · L4 · General Relativity BasicsCollection3 items
01Astronomy · L4 · Exoplanet Atmospheres & the Habitable Zone
02Astronomy · L4 · Exoplanet atmospheres: transmission spectroscopy and the habitable zone
03Astronomy · L4 · Exoplanet Atmospheres & the Habitable Zone — 4 Q
Astronomy · L4 · Exoplanet Atmospheres & the Habitable Zone
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Astronomy · L4 · Exoplanet Atmospheres & the Habitable ZoneCollection3 items
01Astronomy · L4 · The Interstellar Medium: Gas, Dust & the 21 cm Line
02Astronomy · L4 · The interstellar medium: gas, dust, the 21 cm line, and extinction
03Astronomy · L4 · The Interstellar Medium — 4 Q
Astronomy · L4 · The Interstellar Medium
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Astronomy · L4 · The Interstellar MediumCollection4 items
01Astronomy · L4 · Active Galactic Nuclei, Quasars & Supermassive Black Holes
02Astronomy · L4 · Active galactic nuclei: accretion disks, jets, and supermassive black holes
03Astronomy · L4 · The unified AGN model: same engine, different viewing angle
+1 moreAstronomy · L4 · Active Galactic Nuclei & Quasars
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Astronomy · L4 · Active Galactic Nuclei & QuasarsCollection4 items
01Astronomy · L4 · The Cosmic Microwave Background: Recombination & Anisotropies
02Astronomy · L4 · The cosmic microwave background: recombination, decoupling, and anisotropies
03Astronomy · L4 · From density fluctuations to observed CMB anisotropies and structure
+1 moreAstronomy · L4 · The Cosmic Microwave Background
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Astronomy · L4 · The Cosmic Microwave BackgroundCollection3 items
01Astronomy · L4 · Binary Star Systems & the Mass-Period Relation
02Astronomy · L4 · Binary star systems: the mass-period relation and observational classes
03Astronomy · L4 · Binary Star Systems — 4 Q
Astronomy · L4 · Binary Star Systems
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Astronomy · L4 · Binary Star SystemsCollection3 items
01Astronomy · L4 · Variable Stars: Cepheids, RR Lyrae & Asteroseismology
02Astronomy · L4 · Variable stars: Cepheids, RR Lyrae, and asteroseismology
03Astronomy · L4 · Variable Stars: Cepheids & RR Lyrae — 4 Q
Astronomy · L4 · Variable Stars: Cepheids & RR Lyrae
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Astronomy · L4 · Variable Stars: Cepheids & RR LyraeCollection4 items
01Astronomy · L4 · Interplanetary Trajectory Design
02Astronomy · L4 · Interplanetary trajectory design: patched conics, delta-v, and gravity assists
03Astronomy · L4 · Designing an interplanetary trajectory: patched conics and the gravity-assist option
+1 moreAstronomy · L4 · Interplanetary Trajectory Design
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Astronomy · L4 · Interplanetary Trajectory DesignCollection3 items
01Astronomy · L4 · Stellar Populations, the Initial Mass Function & Cluster Evolution
02Astronomy · L4 · Stellar populations: the initial mass function and cluster dynamical evolution
03Astronomy · L4 · Stellar Populations & the Initial Mass Function — 4 Q
Astronomy · L4 · Stellar Populations, the Initial Mass Function & Cluster Evolution
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Astronomy · L4 · Stellar Populations, the Initial Mass Function & Cluster EvolutionCollection3 items
01Astronomy · L4 · Radio Astronomy: Single Dishes, Interferometry & the EHT
02Astronomy · L4 · Radio interferometry: from single dishes to the Event Horizon Telescope
03Astronomy · L4 · Radio Interferometry & the EHT — 4 Q
Astronomy · L4 · Radio Astronomy: Single Dishes, Interferometry & the EHT
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Astronomy · L4 · Radio Astronomy: Single Dishes, Interferometry & the EHT