Filmmaker Adam Nemoy helps celebrate the 90th anniversary of Pluto's discovery this month at the 6th annual 'I Heart Pluto' ...

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to ...

If planets had social media accounts, the solar system would showcase a frenzy of unique personalities. Mercury tweets at ...

Venus in Aries sextile Pluto in Aquarius is sexy and intense and could ignite a change that’s as thrilling as it is ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Mercury will join forces with Pluto in Aquarius, stirring up deeply profound revelations and unveiling shocking truths.

And its relationship to Pluto — a world demoted since 2006 from the solar system’s ninth planet to a lowly dwarf planet, in large part due to the discovery of Eris — remains contentious today.

Most moons orbit their planets, but Pluto and Charon are different—they revolve around a point in space between them! 🔄 Why does this happen, and what did NASA’s New Horizons mission reveal about ...

Pluto and its biggest moon, Charon, didn't have a messy breakup. New computer simulations show the primitive dwarf planet and the object that struck it likely had an unforeseen kind of cosmic ...

Burrowing under soil opens up a whole new world, especially when that soil is on other planets. Getting under the top layer ...

From dystopian sci-fi thrillers to beloved indie dramas, there’s plenty to watch on the best free streaming services this week.

Stargazers, prepare for the parade of planets that will take place over the next few nights in the sky. Here's what you need to know.