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Articles on Kuiper Belt

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A natural color image of Pluto taken by NASA’s New Horizons spacecraft in 2015. (NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Alex Parker)

Curious Kids: Is Pluto a planet or not?

A young reader asks: Is Pluto a planet?
Artist’s impression: Looking back 12.9-billion km towards the sun and the inner solar system from Sedna, one of the recently discovered minor planets in the Kuiper belt. NASA, ESA and Adolf Schaller

The long hunt for new objects in our expanding solar system

The search for new objects, including new planets, in our solar system has turned up some interesting finds. There have been a few failures over the years too.

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