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NASA Astronomy Picture of the Day:

Solar System bodies make deep space exploration more fuel efficient! Today’s video shows the Psyche spacecraft gaining speed and changing its trajectory with minimal fuel spent due to a gravity assist from Mars in May 2026. Mars has an average orbital speed of almost 87,000 km/h (54,000 mph) around the Sun. Its orbital motion and its gravity allowed Mars to pull Psyche along with it, increasing the spacecraft’s speed. Gravity assists have been used since 1959’s Luna 3 mission to allow for spacecraft (the Voyagers, Cassini) to reach farther than they could with fuel alone. This assist helped the Psyche spacecraft on its journey to the Psyche asteroid, which it will reach in 2029. While passing Mars, the spacecraft tested instruments that will analyze the asteroid’s composition and magnetic field. This is the first mission to an asteroid thought to be largely made of metal, an essential building block for planets, rather than rock or ice. Find dark skies and look up this August to witness the Perseid meteor shower uninhibited by the Moon!

Photography Series CONTRIBUTOR

The Raising of Lazarus at the St. Wolfgang Altarpiece of the Catholic parish- and pilgrimage church St. Wolfgang im Salzkammergut, Upper Austria. Michael Pacher, 1471–79, set up in 1481. Today is the feast day of St. Lazarus in Western Christianity.

Uoaei1, CC BY-SA 4.0, via Wikimedia Commons. View source.

Prose, Pages & Words CONTRIBUTOR
Science and Technology Series CONTRIBUTOR

NASA Astronomy Picture of the Day:

Taken on the same night, from the same place, with the same telescope and camera, these postcards from our Solar System are shown at the same scale to provide an interesting comparison of apparent sizes. Spanning about half a degree in planet Earth's sky, the Moon is a stitched mosaic of six images. The others are the result of digitally stacked frames or simple single exposures, with the real distances to the objects indicated along the bottom of each insert. Most of the Solar System's planets with their brighter moons, and Pluto were captured during the telescopic expedition, but elusive Mercury was missed because of clouds near the horizon. The International Space Station was successfully hunted, though. The night was July 21st. Telescope and camera were located at the Centro Astronomico de Tiedra Observatory in Spain. Highlights: Recent Total Lunar Eclipse

Photo by Fernando Cabrerizo

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History Series CONTRIBUTOR

The Invention of Writing in Different Civilizations | Kudos365 History Series | The Past that shaped us.

Few developments have had a greater influence on human civilization than the invention of writing. Long before paper, printing, or digital communication, writing enabled people to preserve knowledge beyond living memory, administer growing societies, record laws, conduct trade, and transmit ideas across generations. It transformed history by allowing civilizations to document their achievements, learn from the past, and build increasingly complex institutions.

Science and Technology Series CONTRIBUTOR

NASA Astronomy Picture of the Day:

What created this huge space bubble? Blown by the wind from a star, this tantalizing, head-like apparition is cataloged as NGC 7635, but known simply as the Bubble Nebula. Taken from Krakow, Poland, the featured view utilizes a long exposure to reveal the intricate details of this cosmic bubble and its environment. Although it looks delicate, the 10 light-year diameter bubble offers evidence of violent processes at work. Seen here right of the Bubble's center, a bright hot star is embedded in the nebula's reflecting dust. A fierce stellar wind and intense radiation from the star, which likely has a mass 10 to 20 times that of the Sun, 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.

Photo by Paweł Piechnik

Photography Series CONTRIBUTOR
Musings, Quotes & Proverbs CONTRIBUTOR

Nassim Nicholas Taleb - is a Lebanese-American essayist, mathematical researcher, former derivatives trader, and public thinker whose work examines uncertainty, probability, risk, and the limits of prediction. He became widely known through a sequence of books collectively called the Incerto, in which he argues that people and institutions routinely underestimate the importance of rare, high-impact events.

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Science and Technology Series CONTRIBUTOR

NASA Astronomy Picture of the Day:

How do clusters of galaxies form? Since our universe moves too slowly to watch, faster-moving computer simulations are created to help find out. One famous effort is TNG50 from IllustrisTNG, an upgrade of the famous Illustris Simulation. The first part of the featured video tracks cosmic gas (mostly hydrogen) as it evolves into galaxies and galaxy clusters from the early universe to today, with brighter colors marking faster moving gas. As the universe matures, gas falls into gravitational wells, galaxies forms, galaxies spin, galaxies collide and merge, all while black holes form in galaxy centers and expel surrounding gas at high speeds. The second half of the video switches to tracking stars, showing a galaxy cluster coming together, complete with stellar streams. The outflow from black holes in TNG50 is surprisingly complex and details are being compared with our real universe. Studying how gas coalesced in the early universe helps humanity better understand how our Earth, Sun, and Solar System originally formed. Explore the Universe: Random APOD Generator

Watch NASA's Astronomy Video of the Day

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