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Does our Oort Cloud overlap with Alpha Centauri s?

The Oort Cloud begins about 2,000 to 5,000 AU from the Sun and stretches to about 10,000 to 100,000 AU (0.16 to 1.6 light-years), according to NASA. But keep in mind this outer boundary is pretty nebulous, so there is no hard line where the Oort Cloud ends.

Largest comet ever seen is longer than Connecticut - study

The comet, C/2014 UN271 (Bernardinelli-Bernstein), is over 128.7 kilometers in diameter and has a mass of around 500 trillion tons. It won't hit us, but it will help us understand the Oort Cloud.

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