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NASA Astronomy Picture of the Day:

How did we get here? Click play, sit back, and watch. A computer simulation of the evolution of the universe provides insight into how galaxies formed and perspectives into humanity's place in the universe. The Illustris project exhausted 20 million CPU hours in 2014 following 12 billion resolution elements spanning a cube 35 million light years on a side as it evolved over 13 billion years. The simulation tracks matter into the formation of a wide variety of galaxy types. As the virtual universe evolves, some of the matter expanding with the universe soon gravitationally condenses to form filaments, galaxies, and clusters of galaxies. The featured video takes the perspective of a virtual camera circling part of this changing universe, first showing the evolution of dark matter, then hydrogen gas coded by temperature (0:45), then heavy elements such as helium and carbon (1:30), and then back to dark matter (2:07). On the lower left the time since the Big Bang is listed, while on the lower right the type of matter being shown is listed. Explosions (0:50) depict galaxy-center supermassive black holes expelling bubbles of hot gas. Interesting discrepancies between Illustris and the real universe have been studied, including why the simulation produced an overabundance of old stars.

What can be said in New Year rhymes,
That's not been said a thousand times?

The new years come, the old years go,
We know we dream, we dream we know.

We rise up laughing with the light,
We lie down weeping with the night.

We hug the world until it stings,
We curse it then and sigh for wings.

We live, we love, we woo, we wed,
We wreathe our brides, we sheet our dead.

We laugh, we weep, we hope, we fear,
And that's the burden of the year.

Ella Wheeler Wilcox (November 5, 1850 – October 30, 1919) was an American author and poet. Her works include Poems of Passion and Solitude, which contains the lines "Laugh, and the world laughs with you; weep, and you weep alone." Her autobiography, "The Worlds and I", was published in 1918, a year before her death. Read more

My thoughts about you,
my lovely, sweet bride.
How can I assure,
your always by my side.

The harsh reality
in this life of ours,
you have left me,
going to the stars.

NASA Astronomy Picture of the Day:

Known to some in the northern hemisphere as December's Cold Moon or the Long Night Moon, the last full moon of 2023 is rising in this surreal mountain and skyscape. The Daliesque scene was captured in a single exposure with a camera and long telephoto lens near Monte Grappa, Italy. The full moon is not melting, though. Its stretched and distorted appearance near the horizon is caused as refraction along the line of sight changes and creates shifting images or mirages of the bright lunar disk. The changes in atmospheric refraction correspond to atmospheric layers with sharply different temperatures and densities. Other effects of atmospheric refraction produced by the long sight-line to this full moon rising include the thin red rim seen faintly on the distorted lower edge of the Moon and a thin green rim along the top.

Photo by Giacomo Venturin

How wonderful,
life would be,
if my lovely wife,
could be with me.

Along came a stranger,
wearing a white hat.
Asking many questions.
Know anyone like that?

Walking down Main Street,
hat in his hand,
waiting for the word,
about a life which could be grand.

Off he would go,
as he was on fire.
He wasn't, I suppose,
just a live wire.

AC or DC,
You make the choice.
One you will live,
the other you're toast.

Advance the troops
into the breech.
Fighting for land,
now out of reach.

Long will we live,
alone, out of sight,
waiting, ever waiting,
for the first fight.

Resist you must,
stand by your vow
to protect this country.
I know you know how.

NASA Astronomy Picture of the Day:

In 1986, Voyager 2 became the only spacecraft to explore ice giant planet Uranus close up. Still, this newly released image from the NIRCam (Near-Infrared Camera) on the James Webb Space Telescope offers a detailed look at the distant world. The tilted outer planet rotates on its axis once in about 17 hours. Its north pole is presently pointed near our line of sight, offering direct views of its northern hemisphere and a faint but extensive system of rings. Of the giant planet's 27 known moons, 14 are annotated in the image. Mixed with fuzzy background galaxies, the brighter moons show hints of Webb's characteristic diffraction spikes. And though these worlds of the outer Solar System were unknown in Shakespearean times, all but two of the 27 Uranian moons are named for characters in the English bard's plays.

Christmas Eve and Christmas Day
won't be the same anymore,
for my heart is broken.
So, what's in store?

Look for the good,
look for the door,
don't tell me to trust,
She's not here anymore.