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

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

Mankind must decide how it’s going to deal with contact with extraterrestrials — and time could be running out, one expert warned — after he sounded the alarm that an incoming ...

A senior Harvard astronomer has reignited speculation about the origins of a vast interstellar object hurtling through the ...

Theoretical physicist Avi Loeb says 3I/ATLAS seems to be unusually large, doesn’t appear to have a typical comet’s tail and ...

The object, officially titled 3I/ATLAS, was discovered in July and is currently traveling toward Earth at an estimated ...

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.

The plot of the movie Independence Day could soon become reality—as early as this November. According to Harvard astronomer ...

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

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 ...

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