A conceptual mission known as "Persephone" could explore Pluto and its moons for 50 years — if it ever gets funded and ...

The waning Moon passes Jupiter, Venus, and Mercury before dawn, while Titan’s shadow transits Saturn in the sky this week.

Ever since the International Astronomical Union recognized Haumea and Makemake as dwarf planets in 2008, University of Maine at Presque Isle Emeritus Geology ...

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37.7 billion kilometers) away, light reflecting off Ammonite takes ...

Astronomers have found an Earth-sized planet 40 light years away that sits in its star’s habitable zone, with an average ...

Pluto is the most famous dwarf planet, due in part to its very public demotion from ninth planet of the solar system two decades ago. But a relatively obscure dwarf planet in the main asteroid ...

But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit circumnavigates the sun once every 25,000 years, taking it ...

Dwarf planets Haumea and Makemake are the latest additions to the Maine Solar System Model, billed as the largest solar ...

A bizarre planet defies cosmic norms: scientists have confirmed a giant planet orbiting in reverse around one star in a close ...

In 2006, and after much debate, the International Astronomical Union came up with a new definition for a planet. And for the first time, the term "dwarf planet" was used. Dwarf Planets ...

The new findings on exoplanet TRAPPIST-1d, published in The Astrophysical Journal on Wednesday, mirror similar results for ...

A rare planet in Nu Octantis orbits backward - hinting it may be a second-generation world formed from stellar remnants.