Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

White dwarf stars could host habitable planets. Fast planetary rotation reduces cloud cover, keeping surface temperatures stable.

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

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Computer simulations suggest that there is an undiscovered Earth-like ...

Scientists have long overlooked white dwarfs as hosts for habitable exoplanets, assuming their lack of fusion would make life impossible. But new climate models challenge that idea, showing that ...

Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could ...

Red dwarfs are plentiful, and research shows that they host multitudes of planets ... on Earth and perhaps on other worlds." More information: Afonso Mota et al, How habitable are M-dwarf Exoplanets?

Charon is unusual because it is the largest moon in the solar system compared with ... a double dwarf planet system, not a planet and moon. Charon is smaller than Earth's moon.

Pluto may not be a planet any more, but you still have a chance to see the distant dwarf planet at one of Michigan's ...