nebulae
2.Planetary nebulae are not as airy and tranquil as their images suggest.
3.While stars and nebulae look like specks or small patches of light . they are really enormous bodies.
4.(astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust.
5.The Doppler effect is widely used in astronomy for measuring the velocity at which distant stars or nebulae are approaching or receding.
6.In just two months the ACS has already done more than open a new set of eyes to the beautiful world of galaxies and planetary nebulae that peivade our galactic neighborhood.
7.After a year, he signed on as a graduate student at Yerkes Observatory in Wisconsin and embarked on the work that would one day make him famous: studying faint, hazy blobs of light called nebulae (from the Latin word for cloud) that are visible through even a modest telescope.
