05 · Cosmos · 6 min
Your complete cosmic address
Locate yourself inside nested structures from one body to the observable horizon.
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01
Opening coordinate · Familiar · People
You
Adult human · ≈1.75 mA human-scale observer is the starting point for every measurement in this journey.
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02
First threshold · Planetary · Solar system
Earth
Earth · 12,742 kmOne world holds every known human life, city and ocean.
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03
Perspective shift · Stellar · Distance
The Earth–Moon system
Earth–Moon distance · ≈384,400 kmEven our nearest major neighbour is separated by a mostly empty gulf.
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04
Perspective shift · Stellar · Solar system
The planetary system
Solar System to Neptune · ≈9 billion kmNeptune’s orbit spans billions of kilometres, while the planets remain tiny points inside it.
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05
Deep crossing · Interstellar · Solar system
The Sun’s distant frontier
Oort Cloud · ≈3.2 light-yearsA hypothetical cloud of icy bodies may extend a significant fraction of the way to nearby stars.
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06
Revelation · Galactic · Galaxies
The Milky Way
Milky Way · ≈100,000 light-yearsThe Sun is one star inside a barred spiral galaxy roughly one hundred thousand light-years wide.
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07
Revelation · Galactic · Cosmic structure
The Local Group
Local Group · ≈10 million light-yearsThe Milky Way and Andromeda share a gravitational neighbourhood with many dwarf galaxies.
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08
Return signal · Cosmic · Cosmic structure
Laniakea
Laniakea Supercluster · ≈520 million light-yearsOur galaxy lies within a vast flow-defined supercluster containing enormous filaments and voids.
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09
Return signal · Cosmic · Cosmology
The observable horizon
Observable Universe · ≈93 billion light-yearsThis is not necessarily all that exists — only the region connected to us by cosmic history and light.
1027100% completeImage source ↗
Expedition complete
You crossed 26.7 orders of magnitude.
The route began at Adult human and ended at Observable Universe. The next step is to place both endpoints inside the same comparison engine and inspect what the raw ratio means.