by Ann » Wed May 15, 2019 9:23 am
I really like today's APOD!
Okay, first off, I want to say that the bluish color of NGC 4921 is not "true color". Since there are such low levels of star formation in NGC 4921, the galaxy is clearly dominated by yellow stars. Nevertheless, the milky bluis-white colors suit this galaxy. After all, you've never heard of a yellow ghost, have you?
Today's APOD reveals a lot of lovely little details. Star formation is heavily concentrated to the gas-rich dust clouds in the galaxy. Strong intergalactic winds sculpt "pillars of creation" in the striking dust lane at right, which almost appears to
be on blue fire due to star formation. The bulge of the galaxy looks pale and wan, as if it, too, was a ghost. Diffuse little satellite galaxies can be seen right "above" the galaxy, and at lower right.
NGC 4921 is a handsome ghost of a galaxy.
Ann
I really like today's APOD! :D
[float=right][img2]https://montasefilm.com/wp-content/uploads/2017/11/a-ghost-story.jpg[/img2][c][size=85]Galaxy-colored ghost?[/size][/c][/float]
Okay, first off, I want to say that the bluish color of NGC 4921 is not "true color". Since there are such low levels of star formation in NGC 4921, the galaxy is clearly dominated by yellow stars. Nevertheless, the milky bluis-white colors suit this galaxy. After all, you've never heard of a yellow ghost, have you?
[float=left][img2]https://mk0astronomynow9oh6g.kinstacdn.com/wp-content/uploads/2015/07/ngc4921_colombari_940x400-326x245.jpg[/img2][c][size=85]Ghost-colored galaxy?[/size][/c][/float]
Today's APOD reveals a lot of lovely little details. Star formation is heavily concentrated to the gas-rich dust clouds in the galaxy. Strong intergalactic winds sculpt "pillars of creation" in the striking dust lane at right, which almost appears to [url=https://png.pngtree.com/element_origin_min_pic/16/06/29/16577380e71a05a.jpg]be on blue fire[/url] due to star formation. The bulge of the galaxy looks pale and wan, as if it, too, was a ghost. Diffuse little satellite galaxies can be seen right "above" the galaxy, and at lower right.
NGC 4921 is a handsome ghost of a galaxy.
Ann