As the researchers mapped it, the cloud appears in the shape of a galactic disk.

The star component of the galactic disk is called the stellar disk.

"Dark matter in the galactic disk would put more of them onto an injection trajectory," Hutchill said.

The age of stars in the galactic thin disk has also been estimated using nucleocosmochronology.

Star formation caused by density waves in the galactic disk of the galaxy.

That's one reason we travel outside the galactic disk; by definition, deep space is virtually empty.

They are easily seen through the multiple images of the galactic disk.

Some outside influence was moving in to invade the galactic disk, and growing constantly as it did so.

The smaller, redder stars do leave the wave, and become distributed throughout the galactic disk.

These patterns are extending into the halo of the galaxy, away from its galactic disk.