10 gigaparsecs
10 GpcLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 10 gigaparsecs?
Deep space
10 Gpc
3.0857 × 10²⁶ mmetres
1.0124 × 10²⁷ ftfeet
1.9174 × 10²³ mimiles
2.0626 × 10¹⁵ AUastronomical units
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10 gigaparsecs10 GpcLength · definition
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Observable universe28.21 GpcDiameter · cosmological estimate
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.
A little perspective
The diameter of Observable universe is about 2.82 times the length of 10 gigaparsecs.
Measurements, assumptions & sources +
10 gigaparsecs
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Observable universe
About 92 billion light-years across in present-day comoving distance. Space expanded while the light travelled. The 13.8-billion-year age is a time, not its radius divided by light speed. The total universe may be far larger, possibly infinite.
NASA — How big is space? (2025)
The marked diameter is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
The visual compares length with diameter. The records below preserve each value’s basis and caveats.
Observable universe
28.21 GpcDiameter · cosmological estimate
About 92 billion light-years across in present-day comoving distance. Space expanded while the light travelled. The 13.8-billion-year age is a time, not its radius divided by light speed. The total universe may be far larger, possibly infinite.
- Comparing
- Length ↔ Diameter
- Relative size
- Observable universe is larger on this measurement by a factor of about 2.82. Observable universe's selected measurement is approximately 182% greater than 10 gigaparsecs's.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Observable universe is labelled cosmological estimate; treat the displayed value as a comparison anchor rather than false precision.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
A little smaller. A little larger.