It’s always darkest before the dawn.
This image from our James Webb Space Telescope shows N79, a massive star-forming region within the Large Magellanic Cloud (a satellite galaxy of the Milky Way). At mid-infrared wavelengths, Webb reveals glowing gas and dust deep within the clouds, as well as embedded baby stars.
N79 produces stars at a furious rate, much faster than star-forming regions found in our own galaxy. In fact, N79’s chemical composition is similar to those from the early universe, when star formation was at its peak.
Here, those vivid rays resembling sunlight are actually diffraction spikes for a bright star. Most noticeable for bright, compact objects, diffraction spikes are somewhat like a telescope’s “signature.” The eight-point pattern is the result of the telescope’s hexagonal mirror design, combined with its secondary mirror struts. Meanwhile, our Hubble Space Telescope produces a four-pointed diffraction spike pattern due to its circular mirror.
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