Astronomers have confirmed the discovery of a third interstellar object visiting our solar system, and it’s already sparking ...

Astronomers have spotted a new interstellar object — the third of its kind ever seen — shooting towards us through the solar ...

The interstellar comet 3I/Atlas is the fastest and largest of its kind, giving astronomers a rare glimpse into extrasolar ...

“It’s very exciting!” Hopkins, an astrophysics graduate student at the University of Oxford, told IFLScience. “I’ve been ...

The NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope in Rio Hurtado, Chile, first reported observations to the Minor Planet Center of comet 3I/ATLAS on July 1, 2025.

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The object gained an official name, C/2025 N1 or 3I/ATLAS, on Wednesday. Moving at a record-setting speed for an interstellar ...

Its size is estimated to be a bit smaller than Ceres, which is the smallest of the solar system's five recognized dwarf planets and has a diameter of about 950 km. Pluto, the largest of those ...

By Will Dunham WASHINGTON (Reuters) -Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet ...

With an estimated diameter of approximately 700 kilometers (435 miles), the object is just big enough to classify as a dwarf planet. The International Astronomical Union's Minor Planet Center ...

New Horizons spacecraft survives trip 1 billion miles beyond Pluto It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...