On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA's ...

The planet is tidally locked to its star, which means one side is always facing it and, for that reason, has a scorching ...

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

"Pale Blue Dot" – one of the last photos taken by Voyager 1 – is still the most distant image of the Earth. Astronomer Carl ...

A comical planetary beauty contest is described, highlighting the unique traits of each planet: Mercury’s fiery nature, Venus ...

Astronomers have discovered what seems to be a star racing through the Milky Way at 1.2 million mph, dragging a Neptune-sized ...

The zodiacal light shines in the evening as the Moon reaches Last Quarter and skims past Spica and Antares in the sky this ...

If the solar system held a poetry slam, each planet would present its unique poetic style. Mercury delivers rapid-fire verses ...

NASA has finally confirmed the existence of a new exoplanet that is 50 per cent larger than Jupiter and about a tenth of the ...

Look up this week for February’s full snow moon and to catch the last glimpse of a visible parade of planets in the night sky ...