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An image labeled “James Webb Space Telescope, Cassiopeia A, SNR G111.7-02.1.” The image has a circular-shaped cloud of gas and dust with complex structure. The inner shell is made of bright pink and orange filaments that look like tiny pieces of shattered glass. Around the exterior of the inner shell there are curtains of wispy gas that look like campfire smoke. The white smoke-like material also appears to fill the cavity of the inner shell, featuring structures shaped like large bubbles. Around and within the nebula, there are various stars seen as points of blue and white light. Outside the nebula, there are also clumps of yellow dust. At lower left, a white arrow pointing in the 2 o’clock direction is labeled N for north, while an arrow pointing in the 10 o‘clock direction is labeled E for east. At lower right, a scale bar is labeled 3 light-years and 1 arcminute. At the bottom is a list of MIRI filters in different colors, from left to right: F162M (blue), F356W (green), and F444W (red).