Spiral-arms sentence example
Our Galaxy has spiral arms in its disk - these spiral arms are regions of active star formation.
Among the spiral arms are bright, luminous, slightly pink blobs.
These density waves are twisted by the elliptical orbits into spiral arms.
The WSRT was the first radio telescope to detect and map the spiral arms of another galaxy, M 51.
The dust and spiral arms of normal spiral galaxies, like our own Milky Way, appear flat when viewed edge-on.Advertisement