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An aurora [a] ( pl. aurorae or auroras ), [b] also commonly known as the northern lights ( aurora borealis) or southern lights ( aurora australis ), [c] is a natural light display in Earth 's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic ).
The Blue Marble, taken by either Ron Evans or Harrison Schmitt of the Apollo 17 crew in 1972. The original photograph was taken with the South Pole facing the top, however this version is the most widely distributed. The Blue Marble is a photograph of Earth taken on December 7, 1972, from a distance of around 29,400 kilometers (18,300 miles ...
Aromantic flag. The aromantic pride flag consists of five horizontal stripes, which are (from top to bottom) green, light green, white, gray, and black. The flag was created by Cameron Whimsy [7] in 2014. [8] The green and light green stripes represent aromanticism and the aro-spectrum. The white stripe represents the importance and validity of ...
An afterimage is an image that continues to appear in the eyes after a period of exposure to the original image. An afterimage may be a normal phenomenon (physiological afterimage) or may be pathological ( palinopsia ). Illusory palinopsia may be a pathological exaggeration of physiological afterimages. Afterimages occur because photochemical ...
In May 1970, James W. Cadle, a farmer from Homer, Illinois, proposed his version of the flag of Earth, that consisted of a blue circle representing the Earth, placed in the centre of the flag, in front of a segment of a larger yellow circle, representing the Sun, placed on the left side of the map, and a smaller white circle, representing the Moon, located in the right bottom corner of the ...
t. e. The cosmic microwave background ( CMB or CMBR) is microwave radiation that fills all space in the observable universe. It is a remnant that provides an important source of data on the primordial universe. [1] With a standard optical telescope, the background space between stars and galaxies is almost completely dark.
Murder of Michelle Busha. Michelle Yvette Busha was a formerly unidentified murder victim discovered in Blue Earth, Minnesota, in 1980. Her murder was solved in 1989, but she remained unidentified for years following the confession of Robert Leroy Nelson, who was a former Minnesota State Trooper. Busha's remains were identified in 2015 after a ...
First full-disk "true color" [41] picture of the Earth; [42] subsequently used on the cover of the first Whole Earth Catalog. [43] [42] December 21, 1968. Apollo 8. First full-disk image of Earth from space taken by a person, probably by astronaut William Anders. [44] December 24, 1968.