Pluto is the tiniest planet in our solar system with a diameter of roughly 2,377 kilometers, making it even smaller than our ...

Pluto will reach its closest approach to Earth and align opposite the Sun on July 25, appearing slightly brighter (magnitude ...

What processes during the formation of Pluto's largest moon, Charon, potentially led to it having cryovolcanism, and even an ...

Summer 2015 was marked by a unique astronomical event, which occurs approximately once in ... the history of astronomy. The ...

The globular cluster Messier 22 (M22) reaches its highest point in the sky around midnight local time, specifically for ...

In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Rocks found on Earth may have originated from Mercury: a potential breakthrough for astronomers.

Despite being covered in impact craters that could potentially send pieces of the planet into space, we have never found a ...

The assistant did not initially add Pluto, the far-flung dwarf planet companion at the edge of the solar system — or the ...

But in the early 1980s, Dennis Hope, who had been unemployed for around a year, believed he had found a loophole. The Outer ...