Credit & Copyright: John Hayes
Explanation:
The first hint of what will become of our
Sun
was discovered inadvertently in
1764.
At that time,
Charles Messier was compiling a list
of diffuse objects not to be confused with comets.
The 27th object on
Messier's list, now known as
M27 or the Dumbbell Nebula, is a
planetary nebula,
the type of nebula our
Sun will produce when
nuclear fusion stops in its core.
M27 is one of the brightest
planetary nebulae on the sky,
and can be seen toward the constellation
of the Fox (Vulpecula) with binoculars.
It takes light about 1000 years to reach us from M27,
shown above in colors emitted by
hydrogen and
oxygen.
Understanding the physics and significance of
M27
was well beyond 18th century science.
Even today, many things
remain mysterious about
bipolar planetary nebula like
M27, including the physical mechanism that expels a
low-mass star's gaseous outer-envelope, leaving an
X-ray hot white dwarf.
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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: planetary nebula
Publications with words: planetary nebula
See also:
- Jones Emberson 1
- APOD: 2024 February 12 Á HFG1 & Abell 6: Planetary Nebulae
- APOD: 2023 December 24 Á NGC 2440: Cocoon of a New White Dwarf
- APOD: 2023 October 3 Á MyCn 18: The Engraved Hourglass Planetary Nebula
- NGC 1360: The Robin's Egg Nebula
- APOD: 2023 April 16 Á M2 9: Wings of a Butterfly Nebula
- The Medusa Nebula