When a strange visitor from another star system comes into our neighbourhood, people tend to go back and forth between not caring and being afraid of what might happen. For hundreds of years, we've looked into the dark and wondered if we're alone. But when the interstellar object 3I/ATLAS appeared in July 2025, it brought with it a mystery that can't be easily explained.
Professor Avi Loeb, a Harvard astronomer who is now the most important person in the search for alien technology, is at the centre of this mystery. Loeb is currently walking a fine line between being sceptical of science and being aware of the huge effects that a possible 'black swan' event could have.
