Venus’ Orbit May Harbor Undetected Asteroids That Could Hit Earth

A hidden population of asteroids sharing Venus’ orbit could threaten Earth in a few thousand years, and we might not even see them coming without better telescopes.

These so-called Venus co-orbital asteroids are currently undetected because of their alignment in the sky. Though, simulations combining analytical models and long-term orbital integration suggest they could one day drift into Earth’s path.

“Our study shows that there’s a population of potentially dangerous asteroids that we can’t detect with current telescopes,” Valerio Carruba, first author and professor at São Paulo State University (UNESP), said in a statement.

Unlike asteroids in the main belt between Mars and Jupiter, these Venus co-orbitals are masked by the glare of the sun. This makes spotting them incredibly challenging. current surveys focus on asteroids that pose an immediate threat, leaving this hidden population largely unmonitored.

The research team used computer simulations to model the orbits of these asteroids over millions of years. They discovered that a significant number could eventually cross Earth’s orbit, potentially leading to a collision. While the probability of an impact in the near future is low, the long-term risk is real.

Detecting these asteroids requires new observational strategies. Researchers suggest building dedicated telescopes, or repurposing existing ones, to scan the inner solar system more effectively. Improved data processing techniques are also crucial to filter out the sun’s glare and identify faint asteroids.

This isn’t just about identifying potential threats; it’s about understanding the dynamics of the inner solar system. Discovering these co-orbital asteroids will provide valuable insights into planet formation and the evolution of our cosmic neighborhood.