A guide to what's up in the sky for Southern Australia

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The Lagoon Nebula (30th May 2026)

Image—The VLT Survey Telescope at ESO's Paranal Observatory in Chile

M8 - The Lagoon Nebula in Sagittarius.

Another absolute gem of the winter night sky, and a favourite target for observers and astro-photographers, M8 is a giant emission nebula with an H II region. It is one of only three star-forming nebulae faintly visible to the naked eye (the others being the Orion Nebula and the Tarantula Nebula).

Located approximately 6,000 light-years from Earth, the nebulaspans 110 by 50 light-years. While appearing pink in long- exposure photographs, it typically appears grey when viewed through binoculars or telescopes due to the human eye's limited colour sensitivity in low-light conditions. The nebula contains the young open cluster NGC 6530 within its structure.

The gases in the brightest part of the nebula are excited primarily by two massive O-type supergiants designated Herschel 36 and 9 Sagittarii. Remarkably, at least 60 B-type giants are embedded in the nebula, which make the Lagoon Nebula 3 to 4 times richer in massive stars than the Orion nebula.