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|  Message 9,029 of 10,785  |
|  Alan Ianson to All  |
|  Daily APOD Report  |
|  12 Jul 23 00:56:20  |
 
MSGID: 1:153/757.0 9b065779
TZUTC: -0700
CHRS: LATIN-1 2
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our
fascinating universe is featured, along with a brief explanation
written by a professional astronomer.
2023 July 12
A spiral galaxy is shown with a yellow center, blue rings and spiral
arms, and dark brown and red dust. The surrounding dark field contains
both local stars and more distant galaxies. Please see the explanation
for more detailed information.
Rings and Bar of Spiral Galaxy NGC 1398
Image Credit: Mark Hanson; Data: Mike Selby
Explanation: Why do some spiral galaxies have a ring around the center?
Spiral galaxy NGC 1398 not only has a ring of pearly stars, gas and
dust around its center, but a bar of stars and gas across its center,
and spiral arms that appear like ribbons farther out. The featured deep
image from Observatorio El Sauce in Chile shows the grand spiral galaxy
in impressive detail. NGC 1398 lies about 65 million light years
distant, meaning the light we see today left this galaxy when dinosaurs
were disappearing from the Earth. The photogenic galaxy is visible with
a small telescope toward the constellation of the Furnace (Fornax). The
ring near the center is likely an expanding density wave of star
formation, caused either by a gravitational encounter with another
galaxy, or by the galaxy's own gravitational asymmetries.
Tomorrow's picture: open space
__________________________________________________________________
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.
--- BBBS/Li6 v4.10 Toy-6
* Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757)
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