HOW BIG
DiscoverNebulae

Nebulae

Ring Nebula: size, dimension and comparison

The adopted reference is about 1 light-years.

Extent ≈ 1 light-year

A light-year is a distance: how far light travels in one year. It is used for distances between stars.

The main ring of gas expelled by a star at the end of its life.

Explore at this scale
Ring Nebula, interpreted illustration
Interpreted illustration · dimension stated in the fact sheet.

What does this number measure?

Approximate luminous extent given by the source. The outlines are diffuse: size depends on the region and wavelengths observed.

Compare the stated dimensions

The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.

Compare with Helix Nebula in the explorer →

Source and limitations

Catalogue value: a source is provided, but the measurement has not been individually audited in this project.

Ring Nebula: interpretation of gas shells in emission colours; approximate luminous outlines.

Illustration sources

How Big — generated illustration; NASA/ESA documentary references.

Source coverage: Interpreted reconstruction; brightness, colours and textures are not an observation. Only the designated dimension uses the catalogue's representative value.

How Big — generated illustration; NASA/ESA documentary references.

Source coverage: Interpreted reconstruction; brightness, colours and textures are not an observation. Only the designated dimension uses the catalogue's representative value.