A side-by-side comparison of the Crab Nebula as seen by the Hubble Space Telescope in optical light and the James Webb Space Telescope in infrared light . The Hubble image was released in 2005, while astronomers have recently used Webb’s NIRCam and MIRI to reveal new details of the Crab Nebula.
Additional aspects of the inner workings of the Crab Nebula become more prominent and are seen in greater detail in the infrared light captured by Webb. In particular, Webb highlights what is known as synchrotron radiation: emission produced from charged particles, like electrons, moving around magnetic field lines at relativistic speeds. The radiation appears here as milky smoke-like material throughout the majority of the Crab Nebula’s interior.
Image of the Crab Nebula captured by Webb’s NIRCam and MIRI, with compass arrows, scale bar, and color key for reference. This image shows invisible near-infrared and mid-infrared wavelengths of light that have been translated into visible-light colors. The color key shows which NIRCam and MIRI filters were used when collecting the light. The color of each filter name is the visible light color used to represent the infrared light that passes through that filter.
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