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Cassiopeia A, NuSTAR X-ray image C016 / 9727
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Cassiopeia A, NuSTAR X-ray image C016 / 9727
Cassiopeia A, NuSTAR X-ray image. This object is a supernova remnant, the expanding shell from a massive star that exploded as a supernova some 11, 000 years ago. The light from this supernova is thought to have first reached Earth around 300 years ago. The remnant is 11, 000 light years from Earth, in the constellation of Cassiopeia. This image was obtained by NASAs Nuclear Spectroscopic Telescope Array (NuSTAR). The energy of the X-rays, formed as the expanding shells impact the interstellar medium, are colour-coded: blue (highest), and red and green (lowest). The starry background picture is from the Digitized Sky Survey. Image published in 2013
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© NASA/JPL-CALTECH/DSS/SCIENCE PHOTO LIBRARY
2013 Astrophysical Astrophysics Cassiopeia Expanding Expansion Explosion High Energy Impact Shock Wave Space Telescope Supernova Supernova Remnant Universe Xray Interstellar Medium Shockwave
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This print showcases the stunning Cassiopeia A, a supernova remnant located 11,000 light years away from Earth in the constellation of Cassiopeia. The image was captured by NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) and published in 2013. The intricate details of this expanding shell, formed from the explosion of a massive star approximately 11,000 years ago, are revealed through X-ray energy color-coding: blue representing the highest energy levels and red/green indicating lower energies. As these shells collide with the interstellar medium, they generate intense X-rays that illuminate our understanding of astrophysics. It is mind-boggling to consider that the light emitted by this supernova first reached Earth around 300 years ago despite its occurrence thousands of years earlier. This print serves as a testament to humanity's ability to explore and comprehend distant cosmic phenomena. The background features a mesmerizing tapestry of stars sourced from the Digitized Sky Survey, further enhancing the ethereal beauty captured within this image. With its depiction of shock waves rippling through gas and dust shells while unveiling stellar layers and their impact on surrounding space, this photograph offers an awe-inspiring glimpse into our vast universe. It reminds us how much there is yet to discover beyond our own planet's boundaries and ignites curiosity about what other wonders await us among the stars.
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