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Free Animated Astronomy & Space Diagrams

Solar system, stars, galaxies, cosmology, observation. The diagrams of space and time.

45 live For: Astronomy enthusiasts · Space-news sites · Science popularizers · Educators

For astronomy enthusiasts, space-news sites, and educators. Orbital mechanics, the HR diagram, spectral classes, transit method, gravitational lensing, the rocket equation, planetary atmospheres, cosmological timeline, lunar cycles.

What this is
Free, embeddable, animated diagrams covering astronomy & space topics (solar system, stars, galaxies & cosmology, observation & missions).
Who uses it
Astronomy enthusiasts · Space-news sites · Science popularizers · Educators
How to embed
Copy one line of HTML per diagram. No signup. No watermark. Works in WordPress, Webflow, Ghost, Substack, plain HTML.
Diagrams in this category
45 live (total in catalog: 45).
License
Free forever. The diagram and editorial explainer text are served from scrollchart.com so they can be updated over time to reflect new research.
URL
scrollchart.com/categories/astronomy
Highlights

What you will find here

  • Solar system: orbits, lunar cycles, planetary atmospheres
  • Stars: HR diagram, life cycle, spectral classes
  • Galaxies & cosmology: structure, expansion, CMB
  • Observation: transit method, parallax, lensing, telescopes
Sub-categories

4 topic areas in Astronomy & Space

Solar system

Orbits, lunar cycles, planetary atmospheres, moons, rings.

12 live
Stars

HR diagram, life cycle, spectral classes, supernovae, neutron stars.

12 live
Galaxies & cosmology

Galactic structure, expansion, CMB, dark matter, big bang timeline.

10 live
Observation & missions

Transit method, parallax, lensing, telescopes, rocket equation.

11 live
Catalog

Browse Astronomy & Space diagrams

All categories →

Solar system 12 live

Orbits, lunar cycles, planetary atmospheres, moons, rings.

Astronomy & Space Medium

Planetary Orbits to Scale

The eight planets at relative orbital distances - and the empty space between them.
Astronomy & Space Medium

Kepler's Three Laws

Elliptical orbits, equal areas, T^2 proportional to a^3.
Astronomy & Space Simple

Lunar Phase Cycle

New, waxing crescent, first quarter, gibbous, full, and back - 29.5 day synodic cycle.
Astronomy & Space Simple

Planet Atmospheric Composition

Mercury (none), Venus (CO2), Earth (N2/O2), Mars (CO2), giants (H2/He) - very different stories.
Astronomy & Space Medium

Tides: Sun and Moon Effects

Moon dominates tides; sun reinforces or cancels depending on alignment.
Astronomy & Space Medium

Solar and Lunar Eclipse Geometry

Solar: moon between sun and earth. Lunar: earth between sun and moon. Why they are rare.
Astronomy & Space Medium

The Asteroid Belt

Mass distribution and orbital resonances in the main belt - and why no planet formed there.
Astronomy & Space Simple

Comet Orbits and Anatomy

Highly eccentric orbits with nucleus, coma, and tail growing as they approach the sun.
Astronomy & Space Simple

Inner vs Outer Planets

Rocky vs gas/ice giants - mass, density, composition, and formation differences.
Astronomy & Space Medium

Kuiper Belt and Oort Cloud

Two reservoirs of icy bodies at the outer solar system - the source of comets.
Astronomy & Space Simple

Planet Magnetic Field Strength

Jupiter dominates by 20,000x; Mars and Venus have essentially none.
Astronomy & Space Simple

Rocky Planet Interior

Crust, mantle, outer and inner core - the standard differentiated structure.

Stars 12 live

HR diagram, life cycle, spectral classes, supernovae, neutron stars.

Astronomy & Space Medium

Hertzsprung-Russell Diagram

Luminosity vs temperature - the foundational chart of stellar astrophysics.
Astronomy & Space Rich

Hertzsprung-Russell Diagram (Animated)

Animated walk through the four major stellar populations on the HR diagram: main sequence, red giants, white dwarfs, and supergiants, with named real-star examples.
Astronomy & Space Medium

Stellar Life Cycles by Mass

Low-mass -> red giant -> white dwarf. High-mass -> red supergiant -> supernova -> neutron star or black hole.
Astronomy & Space Simple

Stellar Spectral Classes (OBAFGKM)

O hottest, M coolest. Color, temperature, mass, lifetime all correlate.
Astronomy & Space Medium

Supernova Types

Type Ia (white dwarf detonation) vs Type II (massive star core collapse) - different mechanisms, similar brightness.
Astronomy & Space Medium

Neutron Star Anatomy

A solar mass packed into 20 km - crust, neutron fluid, exotic core.
Astronomy & Space Medium

Binary Star Systems

Detached, semi-detached, contact - mass transfer reshapes both stars.
Astronomy & Space Medium

Star Formation

Gravitational collapse of a giant molecular cloud - protostar -> T Tauri -> main sequence.
Astronomy & Space Simple

Main Sequence Lifetime by Mass

A 10 solar mass star burns in 30 Myr; the Sun lasts 10 Gyr; an M dwarf lasts a trillion years.
Astronomy & Space Medium

Cepheid Period-Luminosity

A Cepheid's pulsation period reveals its luminosity - and thus distance. Standard candles.
Astronomy & Space Medium

Pulsar Emission Geometry

Rotating neutron star with misaligned magnetic axis sweeps a beam past Earth - lighthouse model.
Astronomy & Space Rich

Stellar Nucleosynthesis

Where each element on the periodic table is forged - from hydrogen burning to supernova.

Observation & missions 11 live

Transit method, parallax, lensing, telescopes, rocket equation.

Astronomy & Space Medium

Transit Method for Exoplanets

A planet crossing its star's disk dims the light by tenths of a percent.
Astronomy & Space Rich

Transit Method (Animated)

A planet crossing the disk of its host star dims the starlight by a fraction equal to (R_planet / R_star)². State pills walk through pre-transit, ingress, mid-transit, and egress, with a live light curve cursor.
Astronomy & Space Medium

Radial Velocity Method

Star wobbles toward and away from us as a planet pulls it - Doppler shift reveals the period.
Astronomy & Space Medium

Parallax Distance Measurement

Apparent star shift over six months reveals distance via geometry.
Astronomy & Space Medium

Tsiolkovsky Rocket Equation

deltav = ve * ln(m0/mf). Mass ratio governs how fast you can go.
Astronomy & Space Medium

The Cosmic Distance Ladder

Parallax -> Cepheids -> Type Ia supernovae -> redshift. Each rung calibrates the next.
Astronomy & Space Simple

Telescope Types

Refractor, reflector, catadioptric - optics, mounts, and target uses.
Astronomy & Space Simple

Orbital Velocity by Altitude

LEO 7.8 km/s, GEO 3.1 km/s, Moon 1.0 km/s. Lower orbits are faster.
Astronomy & Space Medium

Hohmann Transfer Orbit

Most efficient impulsive transfer between two circular orbits - two burns.
Astronomy & Space Simple

Launch Windows for Mars

Mars-Earth alignment opens a transfer window every 26 months.
Astronomy & Space Medium

Redshift: Doppler, Cosmological, Gravitational

Three different mechanisms for the same observed wavelength shift.
FAQ

Common questions about Astronomy & Space diagrams

Where can I get free animated astronomy & space diagrams for my website?

Scrollchart is a free library of animated, embeddable diagrams. The Astronomy & Space section covers the most common concepts and frameworks in the field. Each diagram embeds with one line of HTML, no account required, no watermark.

How do I embed a free animated astronomy & space diagram in WordPress?

Copy the embed snippet from the diagram page on Scrollchart and paste it into a custom HTML block in your WordPress editor. The diagram loads automatically and scroll-paints into view. No plugin or API key needed.

Is there a free library of animated astronomy & space diagrams I can embed without coding?

Scrollchart provides ready-to-embed animated diagrams across astronomy & space and 35 other categories. The embed is a single line of HTML that works in any CMS, including WordPress, Webflow, Ghost, Substack, and plain HTML pages.

Do Scrollchart astronomy & space diagrams include explanatory text?

Yes. Each diagram ships with a tabbed explainer panel covering what the diagram shows, the research behind it, and how to interpret it. The text is served from scrollchart.com and rendered directly in your page's DOM so it is indexed by search engines.

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