The comet should be visible by telescope through September, before it gets too close to the sun, and reappear in December on ...

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system.

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed. The object -- likely a comet -- was first detected in data collected between ...

The first interstellar visitor observed from Earth was Oumuamua, Hawaiian for scout, in honor of the observatory in Hawaii that discovered it in 2017.

This interstellar object, known as 3I/ATLAS, is still pretty far from the sun, currently located between the orbits of the asteroid belt and Jupiter but heading toward the inner solar system.

The new interstellar comet's official name is 3I/ATLAS. It's officially the third known interstellar object to pass through our solar system, and it poses no threat to Earth.

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth - but closer to the red planet than us at a safe 150 million miles (240 ...