Eli5 James Webb telescope

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If we can use it to see farther than we have ever seen before why haven’t they got a really good close up of the nearest Solar system outside of our own?

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Anonymous 0 Comments

Space is *really* big, and objects (even planets) are *really* small in comparison.

JWST has an angular resolution (how fine of a detail it can see) of 0.1 arcseconds. At 4.2 light-years away, Proxima B, the nearest exoplanet, takes up 0.0001 arcseconds of image. Both Proxima B and the star it orbits would easily fit in just a single pixel of JWST.

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