Tiny to Vast

An illustrated almanac of scale

Tiny questions.
Vast perspective.

Explore geography, planetary scale, astronomy, climate, and physical effects through tools you can move, tune, and inspect.

Open the first tool

The collection

Fourteen ways to make science visible

All fourteen interactive tools are available, from geographic scale and climate to Earth orbit and the night sky.

A vintage Mercator map showing Greenland moved toward the equator and shrinking to its true relative scale.
Fig. 01

Cartography

True Size of Countries

Drag countries across a Mercator map and watch their apparent scale change with latitude.

D3 · TopoJSON · SVGOpen →
The same country outline placed across the Moon, Earth, Mars, and Jupiter.
Fig. 02

Planetary scale

Country Size on Planets

Compare countries on a true globe, then place them on worlds across the solar system.

D3 · TopoJSON · CanvasOpen →
Two world maps comparing a conventional Mercator projection with a movable diagonal equator.
Fig. 03

Map projection

Custom Mercator Projection

Move the equator and see how a different projection center reshapes the world.

D3 · TopoJSON · SVGOpen →
Cyan water advancing across a detailed coastal elevation map with a globe inset.
Fig. 04

Climate

Sea Level Rise Simulator

Explore elevation thresholds on a satellite map and three-dimensional globe.

MapLibre · DEM tilesOpen →
An asteroid trajectory meeting a terrain map surrounded by concentric modeled effect rings.
Fig. 05

Impact physics

Asteroid Impact Simulator

Set an impactor's size, speed, angle, and material to map its estimated effects.

MapLibre · Physics modelOpen →
A city map with four restrained concentric rings representing modeled blast effect zones.
Fig. 06

Effects model

Nuclear Blast Radius Map

Compare blast, thermal, and radiation zones for different yields and burst types.

MapLibre · Physics modelOpen →
A luminous figure-eight analemma traced by the Sun over an observatory horizon.
Fig. 07

Solar geometry

Sun Analemma Calculator

Plot the Sun's year-long figure eight for a location and fixed UTC time.

D3 · Solar positionOpen →
The Moon, Jupiter, Saturn, and the Sun presented as angular-size observations in the night sky.
Fig. 08

Astronomy

Moon Replaced by Planets

See every planet at its true angular size if it appeared in place of the Moon.

Three.js · WebGLOpen →
A Mars retrograde sky trail beside heliocentric and geocentric orbit diagrams.
Fig. 09

Interactive astronomy

Planetary Motion Lab

Trace Mars across Earth's sky, then compare heliocentric and geocentric explanations.

Canvas · Kepler modelOpen →
Tiny to Vast interactive pottery wheel simulator.
Fig. 10

Material physics

Pottery Wheel Simulator

Shape wet clay with wheel inertia, surface friction, volume conservation, and wall buckling.

Three.js · Viscoplastic process modelOpen →
A night-side view of Earth wrapped in amber and ice-blue satellite orbit trails.
Fig. 11

Orbital catalog

Earth Satellite Tracker

Watch ISS, GPS, weather satellites, and Starlink move on a 3D Earth.

Three.js · CelesTrak GPOpen →
Tiny to Vast — interactive science tools about scale.
Fig. 12

Sky calendar

Eclipse Calendar & Countdown

Every upcoming lunar and solar eclipse through 2028, with a live countdown and times in your timezone.

NASA GSFC data · Intl APIOpen →
Tiny to Vast interactive science tools.
Fig. 13

Lunar astronomy

Lunar Eclipse Visibility Map

Map where the Moon is above the horizon throughout upcoming lunar eclipses.

Three.js · D3 · NASA GSFCOpen →
Tiny to Vast interactive science tools.
Fig. 14

Solar astronomy

Solar Eclipse Path Map

Follow the live partial-eclipse footprint and complete totality or annularity path.

Three.js · Ephemerides · Shadow conesOpen →

Subject modules

A deeper shelf for each discipline

Subject modules group focused micro-simulations by discipline and topic, leaving room for physics, chemistry, biology, and more.

1 topic

Discipline 01

Physics

Small, inspectable experiments for motion, forces, energy, and waves.

Explore Force & Motion

New architecture

Subject → topic → simulation

The first path is physics/force/momentum-collision. Future disciplines can follow the same pattern without crowding the original tool collection.

Try momentum collision