Unseen comets may raise impact risk for Earth

Thousands of dark objects could be hiding in our Solar System.

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NapierW. M., WickramasingheJ. T. & WickramasingheN. C. Mon. Not. R. Astron. Soc, published online, doi:10.1111/j.1365-2966.2004.08309 (2004).
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Mark Peplow
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Armagh Observatory, Northern Ireland

Peplow, M. Unseen comets may raise impact risk for Earth. Nature (2004). https://doi.org/10.1038/news041018-3