Scientists are studying how objects from outside the Solar System could hit Earth. Only a few interstellar objects, like Oumuamua and 2I/Borisov, have been observed so far.
The research explores where on Earth these impacts are more likely to occur. It does not estimate how often collisions may happen. The study focuses on impact probability rather than frequency or damage.
Who Conducted the Study?
Astrophysicist Darryl Seligman and his team led the research. They ran computer simulations to track the possible paths of these objects. The results help identify regions on Earth more likely to experience collisions.
Where Are Impacts More Likely?
Low-latitude regions near the equator show higher chances of impact. High-latitude areas, including polar regions, are less likely to be hit. The Northern Hemisphere has slightly higher probability because most people live there. Understanding geographic risk can help future planetary defence planning.
When Could These Impacts Happen?
Season and Earth’s position affect collision likelihood. In spring, faster objects arrive from the Sun’s movement through the galaxy. In winter, more objects may approach from Earth’s orbital position relative to the solar antapex. Exact timing of impacts remains unpredictable, and such events are extremely rare.
How Scientists Study Impact Risk?
Future observatories, like the Vera Rubin LSST, will track interstellar objects. Detection will help scientists understand their origin, trajectory and speed. This improves preparedness and long-term planetary safety strategies.
Implications for Earth
The study helps understand risk distribution across Earth. Low-latitude regions may face higher potential impact risk. The insights aid planetary defence planning and awareness campaigns. Even though impacts are rare, preparation remains crucial for safety.
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