HOW BIG
DiscoverNebulae

Nebulae

Lagoon Nebula: size, dimension and comparison

The adopted reference is about 55 light-years.

complex width ≈ 55 ly

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

A star-forming region much larger than its close-up views suggest.

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

What does this number measure?

ESA/Hubble describes a nebula about 55 ly wide and 20 ly high. The drawing suggests the whole; Hubble's close-up covers only part of the cloud.

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 Eagle Nebula in the explorer →

Source and limitations

Rounded documentary extent. Boundaries are diffuse and depend on the observations and convention used; this is not a distance from Earth.

Original schematic illustration, not a photograph. Shapes, colours and details are interpreted; only the stated dimension is compared.