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The Sun was born in a nebula five billion years ago. It's going to keep going for another few billion years, but it won't last forever. Here's the story of what happens to a sunlike star when it runs out of fuel. And some of it is very strange.

How the Sun Will Die - Facts for Kids

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Dying sun-sized stars puff off their outer layers, which form planetary nebulae. They can form all sorts of complex shapes, but the Little Gem Nebula (NGC 6818) is somewhat rounded. It's easy to imagine William Herschel (1738-1820) thinking a nebula like this looked a bit like a planet. This Hubble Space Telescope image tells a different story.

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Here is a montage of 100 planetary nebulae. The website asked: how many can you name? Erm, well, I think we'll pass on that one. A number of them are familiar to me, but I sure can't name many of them. Just enjoy!

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From Astronomers Without Borders comes not just an image from the European Southern Observatory of a planetary nebula, but also a poem.

BEAUTEOUS BUBBLE

O nebula of dying star
so brightly glowing from afar,
you set my fantasies ajar.
How ghostly beautiful you are!

As Southern Owl you’re also known
in female serpent Hydra’s zone—
that feared, in Greek mythology,
ophidian beast of the sea.

Of constellations, Hydra’s great,
the largest of the eighty-eight.
And you are seen five hundred plus
three thousand light-years from us; thus

we gaze in wonder at your face,
so lovely there in outer space
with countenance of blushing hues
in rosy rose and shades of blues,

four light-years in diameter,
which for a humble amateur
stargazer seems to cast a spell…
What sidereal tales you tell

of cyclic evolution, while
you pass away in gorgeous style
to merge within creation’s flow,
as stellar winds your gases blow,

to ultimately fade from sight
and glorious celestial light!
Your core will burn a billion years,
until at last white dwarf appears.

Then comes the final cooling down
with loss of stardom’s grand renown,
before into the universe
your astral elements disperse

samsara-like, in endless chains
of causal links in multi-branes,
according to M-theory’s scheme—
but that is yet another theme…

O brilliant orb of bubble shape
whose splendors leave us all agape,
albeit in your twilight phase,
you twinkled once in shining blaze.

The stunning colors you display
in such spectacular array
will be short-lived in cosmic time,
as will this lyric ode in rhyme.

You show us how our sun might die
that lights the days in earthly sky—
an epitaph of pale blue sphere,
reminding of what fools lived here.

~ Harley White


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