Back to Glossary

Nebula

A nebula is a giant cloud of gas (mostly hydrogen and helium) and cosmic dust situated between stars in the interstellar medium. Nebulae serve as sites of stellar birth and death—including emission nebulae that glow from ionized gas, reflection nebulae that scatter starlight, and dark nebulae that obscure background stars.

Source: science.nasa.gov

APODs including "Nebula"

A Helix Nebula Deep Field

A Helix Nebula Deep Field

29/07/2025

Cat's Paw Nebula from Webb Space Telescope

Cat's Paw Nebula from Webb Space Telescope

21/07/2025

The Rosette Nebula from DECam

The Rosette Nebula from DECam

16/07/2025

Planetary Nebula Mz3: The Ant Nebula

Planetary Nebula Mz3: The Ant Nebula

13/07/2025

Lynds Dark Nebula 1251

Lynds Dark Nebula 1251

10/07/2025

A Beautiful Trifid

A Beautiful Trifid

09/07/2025

Ou4: The Giant Squid Nebula

Ou4: The Giant Squid Nebula

05/07/2025

Messier 109

Messier 109

27/06/2025

The Seagull Nebula

The Seagull Nebula

26/06/2025

Rubin's First Look: A Sagittarius Skyscape

Rubin's First Look: A Sagittarius Skyscape

25/06/2025

W5: Pillars of Star Formation

W5: Pillars of Star Formation

23/06/2025

Rosette Nebula Deep Field

Rosette Nebula Deep Field

17/06/2025