Stunning first images from the Euclid Telescope pose a big challenge for James Webb.

Stunning first images from the Euclid Telescope pose a big challenge for James Webb.

No single observatory, no matter how powerful, can ever teach us all we want to know about the Universe on its own. No matter how advanced our telescope technology gets, there will always be a tradeoff between:
size and cost,
wavelength coverage and observing time required,
and resolution and field-of-view,
among other aspects. While telescopes like Hubble and James Webb have captured our imaginations with their deep, high resolution views all across the Universe, they also face a tremendous limitation: they have narrow, small angle fields of view, and can only see a tiny fraction of the sky at once.
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