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Past images are stored in the APOD Archive, with the first image appearing on June 16, 1995. [3] This initiative has received support from NASA, the National Science Foundation, and MTU. The images are sometimes authored by people or organizations outside NASA, and therefore APOD images are often copyrighted, unlike many other NASA image ...
Ground track example from Heavens-Above.An observer in Sicily can see the International Space Station when it enters the circle at 9:26 p.m. The observer would see a bright object appear in the northwest, which would move across the sky to a point almost overhead, where it disappears from view, in the space of three minutes.
Sagan goes on to extend the comparison in terms of surface area, explaining that if the Cosmic Calendar were scaled to the size of a football field, then "all of human history would occupy an area the size of [his] hand". [3] A similar analogy used to visualize the geologic time scale and the history of life on Earth is the Geologic Calendar.
Select a featured picture to be the POTD (see #Scheduling for details). Images that have a connection to the chosen date (e.g. birthdays or event anniversaries) are often selected. Add {{Picture of the day|YYYY-MM-DD}} to the local file-description page for the featured picture. If the picture is a re-run (which should hardly ever happen ...
NASA Low Earth Developmental test flight: 4 July 16:09: Successful Classified US Air Force: Successful Getaway Special: Utah State: Low Earth (Columbia) Successful Crewed orbital flight with two astronauts, final developmental test flight 29 June 21:45 Kosmos-3M: Plesetsk Site 132/1 Kosmos 1383 Kosmos 1383 (Nadezhda #1, COSPAS 1) COSPAS-SARSAT
Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
The Day the Earth Smiled is a composite photograph taken by the NASA spacecraft Cassini on July 19, 2013. During an eclipse of the Sun , the spacecraft turned to image Saturn and most of its visible ring system , as well as Earth and the Moon as distant pale dots.
Picture of the day. Halos are optical phenomena that appear near or around the Sun or Moon, and sometimes near other strong light sources such as street lights. There are many types of halos, but they are mostly caused by ice crystals in cold cirrus clouds located high (5-10 km, or 3-6 miles) in the upper troposphere. The particular shape and ...