Ancient sun daggers will not hurt you, but they may tell you the time. A sun dagger is a dagger-shaped gap in a shadow created by sunlight streaming through a crevice in a nearby rock. Starting over a thousand year ago, native people of the American southwest carved spiral petroglyphs into rocks that became illuminated […]
NASA’s Curiosity Mars Rover touched down eight years ago, on Aug. 5, 2012, and will soon be joined by a second rover, Perseverance. via wordpress https://wp.me/p4wJUi-78S
Wikipedia article of the day is Second Silesian War. Check it out: https://ift.tt/2y9sDUu Summary: The Second Silesian War (1744–1745) was a conflict between Prussia and Austria which confirmed Prussia’s control of Silesia (now in south-western Poland). The war was fought mainly in Silesia, Bohemia, and Upper Saxony and formed one theatre of the wider War […]
The beautiful Trifid Nebula, also known as Messier 20, is easy to find with a small telescope in the nebula rich constellation Sagittarius. About 5,000 light-years away, the colorful study in cosmic contrasts shares this well-composed, nearly 1 degree wide field with open star cluster Messier 21 (right). Trisected by dust lanes the Trifid itself […]
Wikipedia picture of the day on August 5, 2020: Tübingen, Germany: The so-called Neckarfront consists almost entirely of listed buildings. This photo shows it as seen from the Plataneninsel (plane tree island). In the middle on the river Neckar there is a Stocherkahn (punt) passing, very typical for Tübingen. On the left you see the […]
Wikipedia picture of the day on August 6, 2020: Nasturtium leaves with water drops stacked from 18 pictures. https://ift.tt/3fBpWgahttps://ift.tt/3fBpWga
This long-exposure photograph captures a starry sky above the Earth’s atmospheric glow. via wordpress https://wp.me/p4wJUi-792
Wikipedia article of the day is Passions. Check it out: https://ift.tt/27y47WU Summary: The Russell family is a fictional family on the American soap opera Passions, which aired on NBC (1999–2007) and on DirecTV (2007–2008). Created by the soap’s founder and head writer James E. Reilly, the family originally consisted of the married couple Eve and […]
Wikipedia article of the day is Eurasian crag martin. Check it out: https://ift.tt/30sZYXW Summary: The Eurasian crag martin (Ptyonoprogne rupestris) is a small swallow with brown upperparts, paler underparts, and a white-spotted square tail. It breeds in mountains in southern Eurasia and northwestern Africa. It is larger and has brighter tail spots than the three […]
Wikipedia article of the day is James Thompson (surveyor). Check it out: https://ift.tt/2Rheix4 Summary: James Thompson (1789–1872) was an American surveyor who created the first plat of Chicago (pictured), completing it on August 4, 1830. Born in South Carolina, Thompson moved to Kaskaskia in southern Illinois as a young man and lived in the area for […]