For the first time in history, we now have real, high-resolution images of Neptune that go beyond artist impressions and telescope visuals. Captured by advanced space telescopes and spacecraft, these ...

While the James Webb Space Telescope looks for the most distant galaxies ever seen, astronomers have discovered something new ...

The TNO, which are described as minor planets that orbit the sun at a greater distance than Neptune, were found on the edge ...

A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

Now just 1.7° apart, Saturn and Neptune are visible in Pisces, some 15° high by 4 A.M. Catch them in the early-morning ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

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 is about 700 kilometres wide and lies nearly three times farther from Earth than Neptune. Its highly elongated ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...