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OpenStem
@openstem · Joined Jul 2026
7420 public items8 groups
NoteAstronomy
2 MIN READING
Astronomy · L3 · Celestial Coordinates & Precession
Astronomy · L3 · Celestial Coordinates & PrecessionNoteAstronomy
2 MIN READING
Astronomy · L3 · Star Formation & Molecular Clouds
Astronomy · L3 · Star Formation & Molecular CloudsNoteAstronomy
2 MIN READING
Astronomy · L3 · Planetary Ring & Moon Systems
Astronomy · L3 · Planetary Ring & Moon SystemsNoteAstronomy
3 MIN READING
Astronomy · L4 · Stars and stellar evolution: from nebula to remnant
Astronomy · L4 · Stars and stellar evolution: from nebula to remnantNoteAstronomy
3 MIN READING
Astronomy · L4 · Orbital mechanics: vis-viva, orbital energy, and Hohmann transfers
Astronomy · L4 · Orbital mechanics: vis-viva, orbital energy, and Hohmann transfersNoteAstronomy
3 MIN READING
Astronomy · L4 · Tidal forces: differential gravity, the Roche limit, and tidal locking
Astronomy · L4 · Tidal forces: differential gravity, the Roche limit, and tidal lockingNoteAstronomy
2 MIN READING
Astronomy · L4 · Blackbody radiation: Stefan-Boltzmann, Wien's law, and stellar L-R-T
Astronomy · L4 · Blackbody radiation: Stefan-Boltzmann, Wien's law, and stellar L-R-TNoteAstronomy
2 MIN READING
Astronomy · L4 · Stellar structure: hydrostatic equilibrium and mass continuity
Astronomy · L4 · Stellar structure: hydrostatic equilibrium and mass continuityNoteAstronomy
2 MIN READING
Astronomy · L4 · Galactic dynamics: the rotation curve problem and dark matter
Astronomy · L4 · Galactic dynamics: the rotation curve problem and dark matterNoteAstronomy
3 MIN READING
Astronomy · L4 · The cosmic distance ladder: parallax, Cepheids, and Type Ia supernovae
Astronomy · L4 · The cosmic distance ladder: parallax, Cepheids, and Type Ia supernovaeNoteAstronomy
3 MIN READING
Astronomy · L4 · General relativity: the equivalence principle and classic tests
Astronomy · L4 · General relativity: the equivalence principle and classic testsNoteAstronomy
3 MIN READING
Astronomy · L4 · Exoplanet atmospheres: transmission spectroscopy and the habitable zone
Astronomy · L4 · Exoplanet atmospheres: transmission spectroscopy and the habitable zoneNoteAstronomy
3 MIN READING
Astronomy · L4 · The interstellar medium: gas, dust, the 21 cm line, and extinction
Astronomy · L4 · The interstellar medium: gas, dust, the 21 cm line, and extinctionNoteAstronomy
3 MIN READING
Astronomy · L4 · Active galactic nuclei: accretion disks, jets, and supermassive black holes
Astronomy · L4 · Active galactic nuclei: accretion disks, jets, and supermassive black holesNoteAstronomy
3 MIN READING
Astronomy · L4 · The cosmic microwave background: recombination, decoupling, and anisotropies
Astronomy · L4 · The cosmic microwave background: recombination, decoupling, and anisotropiesNoteAstronomy
3 MIN READING
Astronomy · L4 · Binary star systems: the mass-period relation and observational classes
Astronomy · L4 · Binary star systems: the mass-period relation and observational classesNoteAstronomy
3 MIN READING
Astronomy · L4 · Variable stars: Cepheids, RR Lyrae, and asteroseismology
Astronomy · L4 · Variable stars: Cepheids, RR Lyrae, and asteroseismologyNoteAstronomy
3 MIN READING
Astronomy · L4 · Interplanetary trajectory design: patched conics, delta-v, and gravity assists
Astronomy · L4 · Interplanetary trajectory design: patched conics, delta-v, and gravity assistsNoteAstronomy
2 MIN READING
Astronomy · L4 · Stellar populations: the initial mass function and cluster dynamical evolution
Astronomy · L4 · Stellar populations: the initial mass function and cluster dynamical evolutionNoteAstronomy
2 MIN READING
Astronomy · L4 · Radio interferometry: from single dishes to the Event Horizon Telescope
Astronomy · L4 · Radio interferometry: from single dishes to the Event Horizon TelescopeNoteAstronomy
2 MIN READING
Astronomy · L4 · Comparative planetary atmospheres and the energy-balance climate model
Astronomy · L4 · Comparative planetary atmospheres and the energy-balance climate modelNoteAstronomy
2 MIN READING
Astronomy · L4 · Asteroseismology and helioseismology: reading stellar interiors from oscillations
Astronomy · L4 · Asteroseismology and helioseismology: reading stellar interiors from oscillationsNoteAstronomy
3 MIN READING
Astronomy · L4 · Weighing Sagittarius A*: stellar orbits at the Galactic Center
Astronomy · L4 · Weighing Sagittarius A*: stellar orbits at the Galactic CenterNoteAstronomy
3 MIN READING
Astronomy · L4 · Biosignature gases, the Fermi paradox, and habitability beyond the classical HZ
Astronomy · L4 · Biosignature gases, the Fermi paradox, and habitability beyond the classical HZNoteAstronomy
2 MIN READING
Astronomy · L4 · Gravitational lensing in practice: cluster mass mapping and time-delay cosmography
Astronomy · L4 · Gravitational lensing in practice: cluster mass mapping and time-delay cosmographyNoteAstronomy
2 MIN READING
Astronomy · L4 · White Dwarfs: Electron Degeneracy Pressure & the Chandrasekhar Limit
Astronomy · L4 · White Dwarfs: Electron Degeneracy Pressure & the Chandrasekhar LimitNoteAstronomy
2 MIN READING
Astronomy · L4 · Protostellar Evolution: From Collapse to the Main Sequence
Astronomy · L4 · Protostellar Evolution: From Collapse to the Main SequenceNoteAstronomy
2 MIN READING
Astronomy · L4 · Supernova Classification: Light Curves & Spectral Types
Astronomy · L4 · Supernova Classification: Light Curves & Spectral TypesNoteAstronomy
3 MIN READING