Magazine Posts

NASA Astronomy Picture of the Day:

Is there an angry Sith using force lightning in the Tatacoa Desert? This is not science fiction, but a red sprite with multiple streamers! Ordinary lightning occurs when thundercloud particles collide, lose their electrons, and build up negative charge at the cloud bottom. The cloud’s negative charge repels negative charge deeper into the Earth, leaving Earth’s surface positively charged. The opposite charges attract, reaching towards each other and superheating the air into a white strike of plasma. Red sprites are millisecond events triggered by positive cloud-to-ground lightning. They extend up into the mesosphere where the air is too thin for thunder. Their red glow comes from heated molecular nitrogen. There are several potential causes for red sprites, including that the preceding positive lightning exposes the negatively charged cloud core to the positively charged upper atmosphere, allowing those charges to connect. NASA’s Juno has observed sprites on Jupiter, indicating that sprites occur on other planets!

Photo by Mario Vargas Text: Keighley Rockcliffe (NASA GSFC, UMBC CSST, CRESST II)

Adult woman of the Laarim Tribe smoking in a pipe, Kimotong, South Sudan.

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

John Constable (1776 – 1837). English landscape painter, born in Suffolk. His work is classified as being in the Romantic tradition. He is known principally for revolutionizing the genre of landscape painting with his paintings of Dedham Vale where his home was located. The area is now known "Constable Country" Some of his most well known paintings include Wivenhoe Park (1816), Dedham Vale (1821) and The Hay Wain (1821). His paintings are now among the most popular and valuable in British art. 

NASA Astronomy Picture of the Day:

Why is this asteroid a double? Earlier this month the Japanese robotic spacecraft Hayabusa2 shot past asteroid 98943 Torifune and captured pictures. Although previous observations from distant Earth indicated that Torifune was oblong, Hayabusa2 found that Torifune actually has two joined lobes. With a length of about four soccer fields, this space rock frequently comes near the Earth as it orbits the Sun, although it is not a threat. Besides the two lobes, Torifune shows many large boulders, but, surprisingly, no obvious craters, likely because its surface is a pile of rubble. Like asteroid Arrokoth, it appears that each lobe formed separately before colliding and becoming stuck together. Hayabusa2 famously encountered asteroid Ryugu in 2018, and now heads for an encounter in 2031 with 1998 KY26, a smaller asteroid that rotates unusually fast and might have reservoirs of ice.

Photo by JAXA, U. of Tokyo, Chiba Tech, Tokyo U. of Science, AIST, Paris Obs., IAC

The Medieval town of Belcastel in Aveyron, France, named one of "the most beautiful villages of France". Today is Bastille Day, the French National Day.

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

NASA Astronomy Picture of the Day:

What do auroras look like from above? Behold! From the ground, auroras dance high above clouds, frequently causing spectacular displays. From space, they look a bit different. As the International Space Station (ISS) circles the Earth every 90 minutes, it sometimes sees auroras below that are active on the night side. A one-hour time-lapse video showing auroras from above was captured about two weeks ago from the orbiting ISS. The ISS -- and all objects in low Earth orbit -- will pass well above green auroras but just a bit above red glowing auroras. The auroras' electron and proton streams are too thin to be a danger to the ISS, just as clouds pose little danger to airplanes. From orbit, as magnetic fields change, auroras can appear to squiggle and crawl like giant snakes. The featured one-minute video was captured by French astronaut Sophie Adenot of the ISS Expedition 74 crew. Sky Surprise: What picture did APOD feature on your birthday? (after 1995)

Watch NASA's Astronomy Video of the Day

Arhbalou village nestled in the foothills of the barren north face of the Western High Atlas, Al Haouz, Morocco.

This Photo was taken by Timothy A. Gonsalves. Feel free to use my photos, but please mention me as the author. I would much appreciate if you send me an email tagooty@yahoo.com or write on my talk page, for my information. Please contact me before commercial use. Please do not upload an edited image here without consulting me. I would like to make corrections only at my own source to ensure that the changes improve the image and are preserved.Otherwise you may upload an edited image with a new name. Please use one of the templates derivative or extract., CC BY-SA 4.0, via Wikimedia Commons. View source.

Georgia O'Keeffe - Was one of the most significant artists of the 20th century. She was known as the "Mother of American modernism". Her career spanned seven decades and her work remained largely independent of major art movements. Much of her work, presents large paintings of flowers, shells, rocks, and New Mexico desert landscapes. Biography