On February 18, 1930, a young astronomer named Clyde Tombaugh was comparing photographic plates at Lowell Observatory in ...

Astronomers using the Vera C. Rubin Telescope discovered a possible new dwarf planet that, if confirmed, could join 5 others ...

Just found by the Rubin Observatory, 2026 ED138 orbits beyond Pluto, and may be among the largest and brightest objects ...

Pluto may have a new neighbor that could change what we know about the outer solar system. Scientists have identified a ...

Astronomers analyzing data from the Vera C. Rubin Observatory in Chile have identified a massive candidate world orbiting ...

Arizona – and Flagstaff specifically – has long considered itself the home of Pluto. After all, Percival Lowell, the namesake of the state's most prominent observatory, was not only one of the first ...

The object, known for now as 2026 ED138, is one of the first discoveries by the new Vera C. Rubin Observatory in Chile.

February 18 marks the discovery of Pluto by astronomer Clyde W. Tombaugh. The discovery reshaped the understanding of the solar system, as Pluto was long considered the ninth planet until the ...

FLAGSTAFF – Clyde Tombaugh sat in the Orpheum Theater that fateful night in February 1930, waiting for clouds to pass before the 24-year-old astronomer could return to Lowell Observatory to confirm ...

Add Yahoo as a preferred source to see more of our stories on Google. On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...