What this measurement describes
The selected measurement is vertical relative to a defined base or reference level.
Planetary · Atmosphere
LANDMARK 067 / 121
Kármán line
100 km highA widely used conventional boundary where aeronautical flight gives way to astronautics.
WonderIt is a definition, not a physical wall in the atmosphere.
105metres
Scale context
One coordinate on a continuous universe.
105.00 mKármán linePlanetary realm
Wonder · Explore · Deep
The number keeps its meaning.
How certain is the boundary?
This value is fixed by scientific or international convention. The definition is exact even when a physical realization has measurement limits.
What the engine actually divides
Vastoscope compares the SI value in metres for this conventional space boundary. A ratio is mathematically valid as a linear span, while the interface identifies when the two selected definitions differ.
Familiar scale bridges
Give the number
something to stand beside.
These anchors are selected by logarithmic proximity from familiar human, engineered, planetary and cosmic references.
Monumental · EarthKármán line ↔ Mount Everest11.30×Earth’s highest mountain above mean sea level, shown as vertical elevation.
Planetary · Solar systemKármán line ↔ Earth127.42×Our ocean world, measured by mean diameter — the anchor for familiar planetary comparisons.
Monumental · MachinesKármán line ↔ School bus8,202×A full-size school bus, useful as a measuring stick for dinosaurs, whales and buildings.
Evidence trail
Where this scale comes from.
Vastoscope keeps the displayed number separate from its measurement type and certainty. Representative and model-dependent values are intentionally labelled instead of presented as exact edges.
Nearby on the logarithmic rail
Continue through scale.
Planetary · Solar systemPhobos≈22.5 kmMars’s larger moon is an irregular, cratered world barely larger than a city.
Planetary · Black holesStellar black-hole horizon≈60 km acrossA representative event horizon for a black hole around ten times the Sun’s mass.
Planetary · SpaceflightInternational Space Station orbit≈408 km highThe station circles in low Earth orbit, close enough to cross the sky as a bright moving point.
Planetary · Solar systemCeres≈939 kmThe largest object in the asteroid belt and the only dwarf planet in the inner solar system.
Next signal
Do not stop at the source list.
Continue by scientific relationship, narrative journey or a deliberately distant scale jump.