spiral galaxies articles - Page: 2

What is inside of the Andromeda Galaxy?

The Andromeda Galaxy, known formally as Messier 31 (M31), is our nearest major galactic neighbor, a massive spiral struc...

What is the rotation curve of a galaxy?

This fundamental concept in astrophysics, the galaxy rotation curve, is essentially a graph mapping out how fast materia...

What type of galaxies have gas and dust in them?

The makeup of a galaxy—specifically, the presence or absence of the raw materials for new stars—is fundamentally tied to...

Is a spiral galaxy gas or dust?

A spiral galaxy is fundamentally a mixture of celestial components, not a simple choice between being only gas or only d...

Are most galaxies red or blue-shifted?

The shift in the light emanating from distant cosmic objects tells a profound story about the structure and motion of th...