Venus probably shares its orbit with numerous asteroids with unstable orbits, and these could represent one of the most unpredictable threats to Earth from space. We’ve only found a few of these objects, but a new study notes that given how hard it is to find them, the sample we have indicates there must be many more. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Recent decades have seen a flood of discoveries of potentially hazardous asteroids (PHAs) that cross Earth’s orbit, and might one day collide with us. The Vera Rubin telescope is already picking up the pace of discovery.

Unfortunately, even the Vera Rubin will struggle to find a subgroup of PHAs – objects whose orbits barely reach out as far as Earth. New research suggest

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