James Webb telescope image dazzles on science birthday

To underline just what a marvel Webb is, the below image of the Rho Ophiuchi complex was acquired by Nasa’s now retired Spitzer space telescope. Spitzer, like Webb, was sensitive to infrared light. It was a very capable facility, but with a primary mirror just 85cm in diameter, it could never have achieved the kind of detail we now see with Webb’s 6.5m primary mirror.

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