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

Massive interstellar object 3I/ATLAS, larger than Manhattan, shows unusual glow pattern and planetary alignment that Harvard ...

A cosmic visitor is stirring up an earthly debate. A Harvard University astrophysicist has suggested the incoming ...

Nevertheless, rovers still manage to get stuck pretty often, requiring control teams to conduct a series of maneuvers to try ...

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

NASA's Hubble Space Telescope got an up-close look at a headline-grabbing object known as 3I/ATLAS that has wandered into Earth's cosmic neighborhood.

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

A mysterious interstellar object named 3I/ATLAS is racing through our solar system at incredible speed — and scientists are ...

Is it an alien spaceship or an ancient comet? That’s the question puzzling UFO enthusiasts, NASA, and the European Space ...

Scientists want to send a spacecraft to intercept the interstellar object 3I/ATLAS before it vanishes for good.

NASA is accelerating its plans for a nuclear reactor on the moon. For several years now, the agency has been working to get a ...

The planetary defense system spotted something close to Neptune and researchers think it could be a piece of alien technology ...