It should also help to determine whether most of the dust in the supernova remnant came from the massive star before it exploded, or from the rapidly expanding supernova ejecta. This hot gas was created when ejected material from the supernova smashed into surrounding gas and dust at speeds of about ten million miles per hour.Ī comparison of the infrared and X-ray images of Cas A should enable astronomers to better understand how relatively cool dust grains can coexist in the superhot gas that produces the X-rays. Chandra shows hot gases at about 10 million degrees Celsius. Spitzer reveals warm dust in the outer shell with temperatures of about 26 degrees Celsius (80 degrees Fahrenheit), and Hubble sees the delicate filamentary structures of warmer gases about 10,000 degrees Celsius. Each Great Observatory image highlights different characteristics of the remnant. Infrared data from the Spitzer Space Telescope are colored red optical data from the Hubble Space Telescope are yellow and X-ray data from the Chandra X-ray Observatory are green and blue.Ĭas A is the 300-year-old remnant created by the supernova explosion of a massive star. This stunning picture of the supernova remnant Cassiopeia A (Cas A) is a composite of images taken by three of NASA's Great Observatories. The site was awarded the International Astronomical Union's 2022 Astronomy Outreach Prize.Credit: X-ray: NASA/CXC/SAO Optical: NASA/STScI Infrared: Bonnell were awarded the 2015 Klumpke-Roberts Award by the Astronomical Society of the Pacific "for outstanding contributions to public understanding and appreciation of astronomy" for their work on APOD. ĭuring the United States federal government shutdown of 2013, APOD continued its service on mirror sites. APOD was the Featured Collection in the November 2004 issue of D-Lib Magazine. Abrams, which is a collection of the best images from APOD as a hardcover "coffee table" style book. In 2003, the two authors published a book titled The Universe: 365 Days from Harry N.
In 2002, the website was featured in an interview with Nemiroff on CNN Saturday Morning News. It received a Scientific American Sci/Tech Web Award in 2001. Its practice of using hypertext was analyzed in a paper in 2000. ĪPOD was presented at a meeting of the American Astronomical Society in 1996. APOD is also translated into 21 languages daily. As of 2012, the APOD website has received over a billion image views throughout its lifetime. When the APOD website was created, it received a total of 14 page views on its first day. The images are sometimes authored by people or organizations outside NASA, and therefore APOD images are often copyrighted, unlike many other NASA image galleries. This initiative has received support from NASA, the National Science Foundation, and MTU. Past images are stored in the APOD Archive, with the first image appearing on June 16, 1995. The images are either visible spectrum photographs, images taken at non-visible wavelengths and displayed in false color, video footage, animations, artist's conceptions, or micrographs that relate to space or cosmology. The text has several hyperlinks to more pictures and websites for more information. However, the pictures and descriptions often relate to current events in astronomy and space exploration.
The photograph does not necessarily correspond to a celestial event on the exact day that it is displayed, and images are sometimes repeated.
Nasa picture of the day june 13 2005 professional#
According to the website, "Each day a different image or photograph of our universe is featured, along with a brief explanation written by a professional astronomer." Astronomy Picture of the Day ( APOD) is a website provided by NASA and Michigan Technological University (MTU).
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