It’s one of the most common words used by astronomers—and two of them featured in the James Webb Space Telescope’s debut image package—but do you know what a nebula is?

Finding a nebula in the sky is relatively easy, but sometimes what's visible through binoculars or an optical telescope can be underwhelming. So why are all those press-release images so pretty?

The Crab Nebula, a supernova remnant nebula. Blue in the filaments in the outer part of the nebula represents neutral oxygen, green is singly-ionized sulfur, and red indicates doubly-ionized oxygen.

According to NASA, nebulas are giant clouds of dust and gases in space. They form from an explosion of a dying star or where ...

Scientists say the findings at the core of the Butterfly Nebula, unknown since the discovery of the whole phenomena in the ...

Oregon stargazers have plenty of reasons to look up in August – a month marked by meteor showers, planetary conjunctions, and even a visible nebula.

The nebula is classified as both a reflection nebula, as it is reflecting the light of a nearby star — and as an emission nebula, as it releases radiation.