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|  Message 10008  |
|  Alan Ianson to All  |
|  Daily APOD Report  |
|  17 Nov 24 00:19:32  |
 
MSGID: 1:153/757.0 00994e38
TZUTC: -0800
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.
2024 November 17
A starfield is dominated by light brown dust. In the middle is a
parabolic gas cloud opening toward the lower right. A bright star is
near the center at the apex of the parabolic gas cloud. Please see the
explanation for more detailed information.
LDN 1471: A Windblown Star Cavity
Image Credit: Hubble, NASA, ESA; Processing & License: Judy Schmidt
Explanation: What is the cause of this unusual parabolic structure?
This illuminated cavity, known as LDN 1471, was created by a newly
forming star, seen as the bright source at the peak of the parabola.
This protostar is experiencing a stellar outflow which is then
interacting with the surrounding material in the Perseus Molecular
Cloud, causing it to brighten. We see only one side of the cavity --
the other side is hidden by dark dust. The parabolic shape is caused by
the widening of the stellar-wind blown cavity over time. Two additional
structures can also be seen either side of the protostar; these are
known as Herbig-Haro objects, again caused by the interaction of the
outflow with the surrounding material. What causes the striations on
the cavity walls, though, remains unknown. The featured image was taken
by NASA and ESACÇÖs Hubble Space Telescope after an original detection by
the Spitzer Space Telescope.
Explore Your Universe: Random APOD Generator
Tomorrow's picture: Bok Man
__________________________________________________________________
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Amber Straughn Specific rights apply.
NASA Web Privacy, Accessibility, Notices;
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.
--- BBBS/Li6 v4.10 Toy-7
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