Public Posts

NASA Astronomy Picture of the Day:

Wisps like this are all that remain visible of a Milky Way star. About 7,000 years ago that star exploded in a supernova, leaving the Veil Nebula. At the time, the expanding cloud was likely as bright as a crescent Moon, remaining visible for weeks to people living at the dawn of recorded history. Today, the resulting supernova remnant, also known as the Cygnus Loop, has faded and is now visible only through a small telescope directed toward the constellation of the Swan (Cygnus). The remaining Veil Nebula is physically huge, however, and even though it lies about 1,400 light-years distant, it covers over five times the size of the full Moon. The featured picture was taken in Kuwait in mid-2024 and features light emitted by hydrogen in red and oxygen in blue. In deep images of the complete Veil Nebula like this, even studious readers might not be able to identify the iconic filaments. Piece it All Together: Astronomy Puzzle of the Day

Photo by Abdullah Alharbi

A European bee-eater (Merops apiaster) in flight at Pfyn-Finges, Switzerland. This image was created by merging three successive photographs of the same bird's flight.

Giles Laurent, CC BY-SA 4.0, via Wikimedia Commons. View source.

Jacque Fresco (1916 – 2017) was an American futurist and self-described social engineer. He left home at the age of 14 and was Self-taught, He worked in a variety of positions related to industrial design. Fresco wrote and lectured his views on sustainable cities, energy efficiency, natural-resource management, cybernetic technology, automation, and the role of science in society. He was the founder of the Venus Project a still active non-profit organization that advocates for a resource-based economy and redesigns civilization.

Image source: Maj Borg, Minttu Mäntynen, Andrea Miconi, CC BY 1.0, via Wikimedia Commons.

NASA Astronomy Picture of the Day:

What's happening to this spiral galaxy? Although details remain uncertain, it surely has to do with an ongoing battle with its smaller galactic neighbor. The featured galaxy is labelled UGC 1810 by itself, but together with its collisional partner is known as Arp 273. The overall shape of UGC 1810 -- in particular its blue outer ring -- is likely a result of wild and violent gravitational interactions. This ring's blue color is caused by massive stars that are blue hot and have formed only in the past few million years. The inner galaxy appears older, redder, and threaded with cool filamentary dust. A few bright stars appear well in the foreground, unrelated to UGC 1810, while several galaxies are visible well in the background. Arp 273 lies about 300 million light years away toward the constellation of Andromeda. Quite likely, UGC 1810 will devour its galactic sidekick over the next billion years and settle into a classic spiral form.

Photo by Domingo Pestana

Nymphs of Chromacris speciosa, Paulo César Vinha State Park, Espírito Santo, Brazil.

Leonardo Merçon, CC BY-SA 4.0, via Wikimedia Commons. View source.

The Things I Love

A butterfly dancing in the sunlight,
A bird singing to his mate,
The whispering pines,
The restless sea,
The gigantic mountains,
A stately tree,
The rain upon the roof,
The sun at early dawn,
A boy with rod and hook,
The babble of a shady brook,
A woman with her smiling babe,
A man whose eyes are kind and wise,
Youth that is eager and unafraid—
When all is said, I do love best
A little home where love abides,
And where there’s kindness, peace, and rest.

Scottie McKenzie Frasier (1884-1964) was an American teacher, poet, author, newspaper editor, lecturer, and socialite. She was born in Talladega, Alabama. She did newspaper work for four years in New York City and while there, she became a suffrage advocate and a member of the League of Women Voters She moved back to  to Dothan, Alabama where she went on to be a co-founder of the Dothan Equal Suffrage Association. Frasier's activities during World War I included being a Four Minute Speaker, a group of volunteers authorized by United States President Woodrow Wilson, to give four-minute speeches on topics given to them by the Committee on Public Information (CPI).

This poem is in the public domain.

NASA Astronomy Picture of the Day:

On May 7, the Sun setting behind a church bell tower was captured in this filtered and manipulated digital skyscape from Ragusa, Sicily, planet Earth. In this version of the image the colors look bizarre. Still, an intriguing optical illusion known as an afterimage can help you experience the same scene with a more natural looking appearance. To try it, find the sunspots of active region AR4079 grouped near the bottom of the blue solar disk. Relax and stare at the dark sunspot group for about 30 seconds, then close your eyes or shift your gaze to a plain white surface. In a moment an afterimage of the sunset should faintly appear. But the afterimage sunset will have this image's complementary colors and a more normal yellow Sun against a familiar blue sky.

Photo by Marcella Giulia Pace

Fresh water collecting in the valleys between sand dunes in the Lençóis Maranhenses National Park in Brazil. A layer of rock beneath the sand prevents the rain water from dissipating during the rainy season, resulting in a broad expanse of lagoons.

Julius Dadalti, CC BY-SA 4.0, via Wikimedia Commons. View source.

NASA Astronomy Picture of the Day:

This composite of images spaced a weather-permitting 5 to 9 days apart, from 2024 September 19 (top right) through 2025 May 18 (bottom left), faithfully traces ruddy-colored Mars as it makes a clockwise loop through the constellations Gemini and Cancer in planet Earth's night sky. You can connect the dots and dates with your cursor over the image, but be sure to check out this animation of the Red Planet's 2024/25 retrograde motion. Of course Mars didn't actually reverse the direction of its orbit. Instead, the apparent backwards motion with respect to the background stars is a reflection of the orbital motion of Earth itself. Retrograde motion can be seen each time Earth overtakes and laps planets orbiting farther from the Sun, the Earth moving more rapidly through its own relatively close-in orbit. In this case Mars' apparent eastward motion began to reverse around December 8, when it seemed to linger near open star cluster M44 in Cancer. After wandering back to the west, under Gemini's bright stars Castor and Pollux, Mars returned to pose near M44 by early May. At its brightest near opposition on 2025 January 16, Mars was a mere 96 million kilometers away.

Photo by Tunc Tezel