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New Horizons images of Arrokoth show building blocks for planets

New Horizons images of Arrokoth show building blocks for planets

Arrokoth is about 1 billion miles beyond Pluto

NASA’s New Horizons spacecraft zoomed past a city-sized object just  over a year ago. The most distant object ever explored, since named  Arrokoth, was a “planetesimal” lurking quietly in the outer solar system  a billion miles past Pluto. The spacecraft beamed back images of  what looked like two lumpy, reddish snowballs, one larger than the  other, gently pressed together to form an extraterrestrial snowperson.

On  Thursday the New Horizons scientists published their full analysis and  high-resolution images of Arrokoth in three voluminous reports in the  journal Science. They contend this quirky object provides compelling  evidence for how planets in our solar system, including Earth, formed  four and a half billion years ago from a primordial cloud of dust. The  reports suggest planet formation is not as violent and chaotic a process  as once assumed.

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Source: New Horizons images of Arrokoth show building blocks for planets

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