Magazine Posts

Eruption of Strokkur (Icelandic for "churn"), a fountain geyser located in the Haukadalur geothermal area, southwest of Iceland.

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

NASA Astronomy Picture of the Day:

This floating ring is the size of a galaxy. In fact, it is a galaxy -- or at least part of one: the photogenic Sombrero Galaxy is one of the largest galaxies in the nearby Virgo Cluster of Galaxies. The dark band of dust that obscures the mid-section of the Sombrero Galaxy in visible light (bottom panel) actually glows brightly in infrared light (top panel). The featured image shows the infrared glow in false blue, recorded recently by the space-based James Webb Space Telescope (JWST) and released yesterday, pictured above an archival image taken by NASA's Hubble Space Telescope in visible light. The Sombrero Galaxy, also known as M104, spans about 50,000 light years and lies 28 million light years away. M104 can be seen with a small telescope in the direction of the constellation Virgo.

Sika deer (Cervus nippon) in Halileo's Dacha Nature Reserve, Ternopil Oblast, Ukraine.

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

"Medicare Advantage – the commercial alternative to traditional Medicare that promised to cost less, is drawing down federal health care funds, costing taxpayers an extra 22% per enrollee to the tune of US$83 billion a year." More at The Conversation ➜

NASA Astronomy Picture of the Day:

One of the most identifiable nebulas in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead's neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field. Bright spots in the Horsehead Nebula's base are young stars just in the process of forming. Light takes about 1,500 years to reach us from the Horsehead Nebula. The featured image was taken from the Chilescope Observatory in the mountains of Chile.

Photo by Alex Lin (Chilescope)

Papaya fruits in a grocery store. Colatina, Espírito Santo, Brazil.

ArionStar, CC0, via Wikimedia Commons. View source.

Joe Cox on Unsplash

NASA Astronomy Picture of the Day:

What lies at the center of our galaxy? In Jules Verne's science fiction classic, A Journey to the Center of the Earth, Professor Liedenbrock and his fellow explorers encounter many strange and exciting wonders. Astronomers already know of some of the bizarre objects that exist at our Galactic Center, including vast cosmic dust clouds, bright star clusters, swirling rings of gas, and even a supermassive black hole. Much of the Galactic Center is shielded from our view in visible light by the intervening dust and gas, but it can be explored using other forms of electromagnetic radiation. The featured video is actually a digital zoom into the Milky Way's center which starts by utilizing visible light images from the Digitized Sky Survey. As the movie proceeds, the light shown shifts to dust-penetrating infrared and highlights gas clouds that were recently discovered in 2013 to be falling toward the central black hole.

The Scroll of Eighty-Seven Immortals, drawn by an unknown painter, measuring 30cm high and 292cm wide, is a line-drawing Chinese figure painting. Drawn on a long silk scroll with lines, the painting depicts 87 taoist immortals, including three supreme gods with halo, ten divine generals, seven deities and 67 celestial maidens marching from the right to the left on the bridge. The painting manifests the momentum of the glorious age of Tang Dynasty and was regarded by Xu Beihong as a work of Wu Daozi. Xie Zhiliu ang Chang Dai-chien thought that the painting style of the scroll was simlilar to that in Dung Huang frescoes of later Tang Dynasty and attributed it to Later Tang Dynasty (923–937), while a noted painting and calligraphy connoisseur, Xu Bangda, thought it should be drawn by a Southern Song dynasty (1127–1279) painter.

AnonymousUnknown author, Public domain, via Wikimedia Commons. View source.

NASA Astronomy Picture of the Day:

In an interplanetary first, on July 19, 2013 Earth was photographed on the same day from two other worlds of the Solar System, innermost planet Mercury and ringed gas giant Saturn. Pictured on the left, Earth is the pale blue dot just below the rings of Saturn, as captured by the robotic Cassini spacecraft then orbiting the outermost gas giant. On that same day people across planet Earth snapped many of their own pictures of Saturn. On the right, the Earth-Moon system is seen against the dark background of space as captured by the sunward MESSENGER spacecraft, then in Mercury orbit. MESSENGER took its image as part of a search for small natural satellites of Mercury, moons that would be expected to be quite dim. In the MESSENGER image, the brighter Earth and Moon are both overexposed and shine brightly with reflected sunlight. Destined not to return to their home world, both Cassini and MESSENGER have since retired from their missions of Solar System exploration.

Rainbow yarn for knitting displayed in front of a needlework shop in Graz, Austria.

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

Saratoga Passage, WA