The U.S. government has shot down several objects flying over North America in the past week.
Theories on these UFOs have ranged from foreign spying threats to aliens, so what is really going on? Harvard Astrophysicist Avi Loeb said we may never know all the details, but public attention can help push answers to the surface.
"The more people pay attention these objects, the faster we get to the bottom of what they are," Loeb said on Greater Boston.
Loeb said we would need more information to fully gauge the likelihood that the flying objects are aliens.
"There is something weird about objects coming from interstellar space for me as an astronomer, and I'm doing my best to figure it out," Loeb said.
Loeb launched the Galileo Project with Harvard, which searches for extraterrestrial life and higher forms of intelligence. Loeb said he hasn't found it — yet.
Watch: Aliens or a foreign threat? What is behind the influx of UFOs shot down over U.S.?