Alien hunting Harvard astronomer Avi Loeb continues to rail against the idea that our newest interstellar is merely a comet.

Interstellar object 3I/ATLAS shows an unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight ...

An interstellar comet spotted by NASA is headed for our solar system, showing up near Earth later this year, but it's another ...

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

The probe would be built to last 50 years, with the ultimate goal of making it 1,000 astronomical units out, dwarfing previous strides by human spacecraft and delving into the interstellar medium ...

Avi Loeb said bases this hypothesis on a July 21 image captured by the Hubble Space Telescope and shared by NASA.

A Harvard scientist has suggested that an interstellar object passing through the solar system might be a nuclear-powered alien spaceship. Most astronomers believe the object, dubbed 3I/ATLAS, […] ...

STARRS Observatory in Hawaii made history in 2017 when they detected 'Oumuamua, the first interstellar object (ISO) ever ...

Scientists plan for the Interstellar Probe to reach 1,000 AU -- 1 AU is the distance from the sun to Earth -- into the interstellar medium. That's about 10 times as far as the Voyager spacecraft ...

The proposed "Interstellar Probe" mission would aim to reach 90 billion miles (145 billion kilometers) from the sun, pushing the limits of engineering know-how and space technology.

Scientist Ralph McNutt, Jr. is lobbying NASA to approve plans for a $3.1 billion Interstellar Probe that could launch in 2036 if it can escape the yoke of Earth's gravity — not to mention its ...

How's this for a paradox: In order to go farther from the sun than we've ever gone before, first we must go closer to the sun than ever before. That's the counterintuitive concept at the heart of the ...