A Harvard physicist has asserted that new images of the Manhattan-sized interstellar object rocketing through our inner solar ...

NASA's Hubble Space Telescope has captured an incredible image of an alien comet that's soaring through our galaxy from ...

The Hubble Space Telescope captured the best picture yet of a comet visiting our solar system from another system. The photos ...

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

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

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

A Harvard astronomer explained why an unidentified object detected this summer could potentially be an alien spacecraft.Avi Loeb, the chair of the university's astronomy department, appeared Thursday ...

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

Harvard astronomer and alien hunter Avi Loeb is still holding onto hope that interstellar object 3I/ATLAS was sent to us by ...

From tracking a rare interstellar visitor to revealing hidden star systems, the SETI Institute is at the forefront of space science. Explore four recent stories showcasing our role in groundbreaking ...

Harvard astrophysicist Avi Loeb suggests a comet passing through the solar system may be an alien spacecraft, sparking debate among experts.

Harvard astrophysicist Avi Loeb has cowritten a research paper speculating whether the comet 3I/ATLAS is in fact "hostile" ...