ASTRONIUM
NO LIMIT.
ONLY POSSIBILITY.
- MODEL MASS
- 10¹¹ M☉
- SCHWARZSCHILD RADIUS
- ≈ 1,974 AU
I build at the edge
of what is possible.
At the edge of the observable.
An interactive atlas of cosmic ideas.
Observed phenomena inspire these scenes; each rendering is a simplified visual model. Theory labels identify unconfirmed ideas. Controls use display scales unless stated otherwise.
SOLAR SYSTEM
Eight worlds. One star.
FROM MERCURY TO NEPTUNE
The Sun is a star. Pluto is a dwarf planet. This collection covers the eight planets.
Planet sizes are normalized for inspection. Red is the observatory palette, not their natural color. Rotation uses a display timescale.
MEAN RADIUS / NASACLOSE TO
THE FIRE.
A cratered world. A slow-turning day.
0.387 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Mercury has a heavily cratered surface and an extremely thin exosphere. It turns three times for every two orbits. Move the light across its relief to inspect the terminator; crater positions here are procedural, not a surface map.
- MEAN RADIUS
- 2,440 km
- MEAN SOLAR DISTANCE
- 0.387 AU
- ORBITAL PERIOD
- 88 EARTH DAYS
- SIDEREAL ROTATION
- 58.6 d
BENEATH
THE VEIL.
A world sealed beneath its clouds.
0.723 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Venus rotates retrograde beneath thick clouds of sulfuric acid. Its carbon-dioxide-rich atmosphere traps heat, making it hotter than Mercury. Lower the cloud opacity to reveal an imagined surface layer; visible light cannot normally see through these clouds.
- MEAN RADIUS
- 6,052 km
- MEAN SOLAR DISTANCE
- 0.723 AU
- ORBITAL PERIOD
- 225 EARTH DAYS
- SIDEREAL ROTATION
- 243 d
THE ONLY
HOME WE KNOW.
Liquid water. A restless atmosphere.
1 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Earth is the only world currently known to host life. Oceans, land and moving clouds create different reflectances along the day–night boundary. Adjust the illumination and cloud cover; the generated land patterns are not geographic or weather data.
- MEAN RADIUS
- 6,371 km
- MEAN SOLAR DISTANCE
- 1 AU
- ORBITAL PERIOD
- 365.25 EARTH DAYS
- SIDEREAL ROTATION
- 23.9 h
DUST
AND MEMORY.
A cold desert with a watery past.
1.524 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Mars has a thin atmosphere, polar ice caps and geological evidence of ancient liquid water. Raise the dust veil to obscure an imagined cratered landscape. The storm and terrain are visual analogues, not a forecast or reconstruction of a specific event.
- MEAN RADIUS
- 3,390 km
- MEAN SOLAR DISTANCE
- 1.524 AU
- ORBITAL PERIOD
- 687 EARTH DAYS
- SIDEREAL ROTATION
- 24.6 h
WEATHER
WITHOUT SHORE.
Banded clouds on the largest planet.
5.203 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Jupiter has no solid surface to stand on. Its cloud bands flow in alternating directions, and the Great Red Spot is a long-lived atmospheric vortex. Adjust the vortex contrast to follow an illustrative storm; its size and speed are chosen for readability.
- MEAN RADIUS
- 69,911 km
- MEAN SOLAR DISTANCE
- 5.203 AU
- ORBITAL PERIOD
- 4,333 EARTH DAYS
- SIDEREAL ROTATION
- 9.9 h
A THOUSAND
BROKEN CIRCLES.
Countless icy particles. One ring system.
9.537 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Saturn is a gas giant surrounded by rings made mostly of water ice, with some rocky material. Change their display opacity and orbit the planet to inspect which parts pass in front or behind it. Ring thickness and brightness are exaggerated.
- MEAN RADIUS
- 58,232 km
- MEAN SOLAR DISTANCE
- 9.537 AU
- ORBITAL PERIOD
- 10,756 EARTH DAYS
- SIDEREAL ROTATION
- 10.7 h
A WORLD
ON ITS SIDE.
An axis tipped almost into the orbital plane.
19.19 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Uranus is an ice giant with an axial tilt of about 97.8 degrees. Its equatorial rings follow that tilted plane. Adjust the model tilt to compare this unusual orientation with an upright axis. Ice giant describes its composition, not a solid icy surface.
- MEAN RADIUS
- 25,362 km
- MEAN SOLAR DISTANCE
- 19.19 AU
- ORBITAL PERIOD
- 30,687 EARTH DAYS
- SIDEREAL ROTATION
- 17.2 h
THE LAST
GREAT WIND.
A dynamic atmosphere far from the Sun.
30.07 AU↔ DRAG TO INSPECT · ARROW KEYS TO ROTATE
Neptune is the most distant of the eight planets. Its atmosphere carries powerful winds, bright clouds and transient dark vortices. Increase the high-cloud contrast to reveal motion; the patterns are procedural and do not depict present-day conditions.
- MEAN RADIUS
- 24,622 km
- MEAN SOLAR DISTANCE
- 30.07 AU
- ORBITAL PERIOD
- 60,190 EARTH DAYS
- SIDEREAL ROTATION
- 16.1 h
Choose another category to continue exploring.
Ad astra
per aspera.
Through hardship, to the stars.
Curiosity begins the journey. Rigor gives it direction.