How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

At the far reaches of our Solar System lies Pluto, a mysterious world shrouded in shadows and icy terrain. NASA’s latest ...

Think you know Pluto? Think again. From its mysterious orbit to why it’s so hard to spot - even with Hubble - this video ...

Mercury will make an opposition to Pluto retrograde, creating a push and pull between the need for bold self-expression and ...

If you have Pluto in Libra (born between 1971–1984), you're part of a generation meant to redefine relationships, justice and ...

Yet a trickle of reflected photons, captured by two big telescopes on opposite hemispheres, has given scientists their first good look at the most remote sizable world spotted in more than a decade.

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Let us know. Pluto, long reclassified as a dwarf planet, continues to surprise scientists. Astronomers recently detected new features in its high-altitude haze - revealing more than previously known.

In a significant breakthrough, astronomers have detected a Pluto-like planet situated far beyond the known boundaries of the solar system. Identified as 2017 OF201, the icy celestial body may ...

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's atmosphere, while at the same time giving methane and other organic ...

Pluto's mesosphere is found between 20 kilometers and 40 kilometers (12.4 to 24.9 miles) high and reaches a maximum temperature of minus 163 degrees Celsius (110 Kelvin/minus 262 degrees ...