Avi Loeb suggested that NASA may have rushed to conclusions by ruling out the possibility of an artificial aircraft.

Instead, scientists are looking into existing spacecraft already in orbit around other planets. Harvard Professor Avi Loeb ...

Loeb has developed what he calls the 'Loeb Scale', a ranking system to evaluate the likelihood that an object is artificial, ...

A Harvard astronomer is suggesting that an interstellar object nearing Earth could be an engineered object — rather than a ...

Scientists estimate the object to be more than 12-miles-wide, speeding at 37 miles-per-second, relative to the sun.

Harvard physicist, Dr. Avi Loeb, suggests that the Manhattan-sized interstellar object 31/ATLAS could be an alien probe with potential to cause destruction.

A Harvard physicist has asserted that new images of the Manhattan-sized interstellar object rocketing through our inner solar system back his claim that it’s not a comet — but instead possibly an ...

Yet NASA - and other experts - do not share his concerns and maintain 3I/ATLAS is simply an interstellar comet, thought to be around 7 miles (11.2 kilometers) wide. The US space agency has been ...