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The NIRSpec (Near-Infrared Spectrograph) is one of the four scientific instruments flown on the James Webb Space Telescope (JWST). [2] The JWST is the follow-on mission to the Hubble Space Telescope (HST) and is developed to receive more information about the origins of the universe by observing infrared light from the first stars and galaxies.
A wobbly web wheel is a disc wheel with additional shaping, rather than a spoked wheel with merged spokes. To avoid stress concentrations, the webs form smooth curves rather than sharply defined spokes. Such wheels can be pressed from sheet steel, or cast in light alloy. Casting foundries prefer a disc that has a consistent wall thickness, as ...
NIRCam wrapped up in 2013 NIRCam being installed in 2014. NIRCam (Near-InfraRed Camera) is an instrument aboard the James Webb Space Telescope.It has two major tasks, as an imager from 0.6 to 5 μm wavelength, and as a wavefront sensor to keep the 18-section mirrors functioning as one.
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The Cartwheel Galaxy (also known as ESO 350-40 or PGC 2248) is a lenticular ring galaxy about 500 million light-years away in the constellation Sculptor. [1] It has a D 25 isophotal diameter of 44.23 kiloparsecs (144,300 light-years), and a mass of about 2.9–4.8 × 10 9 solar masses; its outer ring has a circular velocity of 217 km/s.
SMACS J0723.3–7327, commonly referred to as SMACS 0723, is a galaxy cluster about 4 billion light years from Earth, [2] within the southern constellation of Volans (RA/Dec = 110.8375, −73.4391667).
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