104.0 m · Ocean
Challenger Deep
≈10.935 km deepThe deepest reliably measured point in the ocean, inside the Mariana Trench.
≈10.935 km deep → 50,724 km
Planetary scale
Worlds, orbits and the atmospheric edge of home.
Planetary scale includes both physical worlds and distances around them. A moon’s diameter and an orbital altitude can share units, but they describe different realities; Vastoscope keeps that distinction visible.
Enter this realm in the scale engine
Questions this realm answers
Start with curiosity.
- How large is Earth compared with Jupiter?
- How far is the ISS from Earth?
- How many Earths fit across the Earth–Moon distance?
24 source-backed coordinates
Every landmark in planetary scale.
Ordered by the actual logarithm of its SI value.
104.0 m · Solar system
Halley’s Comet nucleus
≈11 kmThe dark icy nucleus behind Halley’s spectacular coma is roughly city-sized.
104.1 m · Atmosphere
Troposphere
≈12 km highThe lowest atmospheric layer contains most weather and most of the air’s mass.
104.3 m · Stars
Neutron star
≈20 kmMore mass than the Sun can be compressed into a sphere roughly the width of a city.
104.4 m · Solar system
Phobos
≈22.5 kmMars’s larger moon is an irregular, cratered world barely larger than a city.
104.4 m · Engineering
Large Hadron Collider
26.659 km aroundThe world’s largest particle accelerator forms a buried ring beneath France and Switzerland.
104.8 m · Black holes
Stellar black-hole horizon
≈60 km acrossA representative event horizon for a black hole around ten times the Sun’s mass.
105.0 m · Atmosphere
Kármán line
100 km highA widely used conventional boundary where aeronautical flight gives way to astronautics.
105.6 m · Spaceflight
International Space Station orbit
≈408 km highThe station circles in low Earth orbit, close enough to cross the sky as a bright moving point.
105.7 m · Solar system
Vesta
≈525 kmA large differentiated asteroid with a giant impact basin near its south pole.
106.0 m · Solar system
Ceres
≈939 kmThe largest object in the asteroid belt and the only dwarf planet in the inner solar system.
106.2 m · Geography
Sweden north to south
≈1,572 kmSweden’s long north–south span bridges regional geography and planetary curvature.
106.4 m · Earth
Great Barrier Reef system
≈2,300 km longA vast connected marine ecosystem stretching along Australia’s northeastern coast.
106.4 m · Solar system
Pluto
2,376.6 kmA dwarf planet with mountains of water ice and a bright heart-shaped plain.
106.5 m · Solar system
The Moon
3,474.8 kmEarth’s natural satellite, the only world beyond Earth visited by humans.
106.6 m · Planetary geology
Valles Marineris
≈4,000 km longA canyon system on Mars that would stretch across a continent on Earth.
106.7 m · Solar system
Mercury
4,879.4 kmThe smallest planet and the closest world to the Sun.
106.8 m · Solar system
Mars
6,779 kmA cold desert world with giant volcanoes, canyons and evidence of ancient water.
107.0 m · Atmosphere
Earth’s exosphere
≈10,000 km highThe outermost atmospheric region fades gradually into interplanetary space rather than ending sharply.
107.1 m · Solar system
Venus
12,104 kmAn Earth-sized world hidden beneath dense clouds and a runaway greenhouse atmosphere.
107.1 m · Stars
White dwarf
≈12,700 kmA Sun-like star’s exposed core can pack a star’s mass into a body about Earth’s size.
107.1 m · Solar system
Earth
12,742 kmOur ocean world, measured by mean diameter — the anchor for familiar planetary comparisons.
107.7 m · Solar system
Neptune
49,244 kmA distant ice giant with the fastest known planetary winds in the solar system.
107.7 m · Solar system
Uranus
50,724 kmAn ice giant rotating on its side, surrounded by faint rings and many moons.
Guided routes
Meet this realm inside a story.
Ocean · 5 minInto the midnight world
Descend from ordinary diving depth through fading sunlight, shipwrecks, abyssal plains and the deepest measured point in the ocean.
Begin expedition →Flight · 5 minLeave the planet without cheatingClimb from mountains through atmospheric layers to orbit, the Moon and the gulf between planets.
Begin expedition →Stars · 7 minHow stars become impossibleFollow stellar scale from a nursery through ordinary stars, giants, remnants and black holes.
Begin expedition →Cosmos · 6 minYour complete cosmic addressLocate yourself inside nested structures from one body to the observable horizon.
Begin expedition →Making · 4 minWhat humans learned to buildCross the engineered world from pocket technology to machines, monuments, bridges and a particle accelerator.
Begin expedition →