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Credit & Copyright: Dave Jurasevich
(Mount Wilson Observatory)
Explanation:
Blown by the wind from a massive star, this interstellar
apparition has a surprisingly
familiar shape.
Cataloged as NGC 7635, it is also known simply
as The
Bubble Nebula.
Although it looks delicate, the 10 light-year diameter
bubble offers evidence of
violent processes at work.
Above and right of the Bubble's center is a hot,
O-type star, several hundred thousand
times more luminous and approximately 45 times more massive
than the Sun.
A fierce stellar wind and intense radiation from that
star has blasted out the
structure of glowing gas
against denser material
in a surrounding
molecular
cloud.
The intriguing Bubble Nebula lies a mere
11,000 light-years away toward the boastful constellation
Cassiopeia.
A false-color
Hubble palette was used to create
this sharp image and
shows emission from sulfur, hydrogen, and oxygen atoms in red,
green, and blue hues.
The image data
was recorded using a small telescope under
clear, steady skies, from Mount Wilson Observatory.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Bubble nebula - NGC 7635 - stellar wind - O star
Publications with words: Bubble nebula - NGC 7635 - stellar wind - O star
See also:
- APOD: 2026 July 27 Á NGC 7635: The Bubble Nebula
- APOD: 2026 May 22 Á The Nebulous Realm of WR 134
- APOD: 2026 April 01 Á The Claw and Bubble Nebulae
- APOD: 2024 November 17 Á LDN 1471: A Windblown Star Cavity
- APOD: 2024 October 30 Á NGC 7635: The Bubble Nebula
- The Nebulous Realm of WR 134
- WR 134 Ring Nebula