Cassiopeia A (Cas A) (listenⓘ) is a supernova remnant (SNR) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies above 1 GHz. The supernova occurred approximately 11,000 light-years (3.4 kpc) away within the Milky Way; given the width of the Orion Arm, it lies in the next-nearest arm outwards, the Perseus Arm, about 30 degrees from the Galactic anticenter. The expanding cloud of material left over from the supernova now appears approximately 10 light-years (3 pc) across from Earth's perspective. It has been seen in wavelengths of visible light with amateur telescopes down to 234 mm (9.25 in) with filters.
It is estimated that light from the supernova itself first reached Earth near the 1690s, although there are no definitively corresponding records from then. Cas A is circumpolar at and above mid-Northern latitudes which had extensive records and basic telescopes. Its likely omission in records is probably due to interstellar dust absorbing optical wavelength radiation before it reached Earth, although it is possible that it was recorded as a sixth magnitude star 3 Cassiopeiae by John Flamsteed. Possible explanations lean toward the idea that the source star was unusually massive and had previously ejected much of its outer layers. These outer layers would have cloaked the star and re-absorbed much of the light released as the inner star collapsed.
Cas A was among the first discrete astronomical radio sources found. Its discovery was reported in 1948 by Martin Ryle and Francis Graham-Smith, astronomers at Cambridge, based on observations with the Long Michelson Interferometer. The optical component was first identified in 1950.
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Spiral Galaxy, whose light traveled thousand years for the our Spaces Telescope to record its photons!
Where the material becomes denser, as a result of physical processes, it will be brighter and warmer, like as the sun! Somehow, the thickening matter creates deeper and deeper holes in space-time. Based on this, I created the negative gravity map of the image with the help of software, as gravity distorts a deep pit in space-time, the texture rises on the model, thus creating gravity mountains!
Based on this, I created the "3D negative gravity map" of the 2D image with the help of software, as gravity distorts a deep hole in space-time, the texture rises on the model, thus creating gravity mountains!
3D image obtained as a result of soft analysis of the 2D images of the new Hubble Space Telescope. The technique based on color analysis highlights the light of stars and ionized gases from the darkness of space, as gravity curves space, thus creating a spatially interpretable high-resolution 3-dimensional work.
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