In early July, astronomers spotted a mysterious object, later dubbed 3I/ATLAS after it was confirmed to be the third-ever interstellar visitor cruising through our solar system. Loeb suggests the object could lose “about a tenth of its mass” in a matter of a single month. “Alternatively, the non-gravitational acceleration might be the technological signature of an internal engine,” Loeb wrote in his blog. Instead, it could simply “be a signature of ionized carbon monoxide for a natural comet,” Loeb conceded. “We will continue to push for answers.”More on 3I/ATLAS: The Mysterious Interstellar Object Has Unexpectedly Started Brightening, Scientists Say