Neptune and Saturn are two Moon-widths apart all month, while the morning sky hosts Venus and Uranus together in Taurus.

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 ...

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

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

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

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

How long does it take Pluto to orbit the sun? Learn more about how this planet makes one lap around our Solar System.

JWST has confirmed Pluto’s bizarre atmospheric behavior and its ghostly interaction with Charon. These findings could reshape our understanding of distant icy worlds—and even hint at how Earth once ...

As for Pluto, it eventually suffered the indignity of being demoted by the International Astronomical Union (IAU) from full planet status to “dwarf planet”—a reclassification that Stern and ...

Computer simulations show that planets could be flung out of the inner solar system, supporting the possible existence of a ...