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

Pluto was once the ninth planet of our solar system, until scientists reclassified it in 2006, sparking outrage and debate. But why was Pluto kicked out of the planetary club? The answer lies in a new ...

And then he’d go back later and use the blink comparator to compare the photos ... that led to the discovery of Planet X. Pluto never really fit in with the other planets in the solar system.

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

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

The other four moons ... in the solar system compared with its parent body. In fact, Charon and Pluto are so similar in size that they are considered a double dwarf planet system, not a planet ...

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

Pluto’s four other circumbinary, irregularly-shaped moons are ... In last week’s article, I meant to display each planet’s gravitational force compared to that of the sun as percentage figures, and ...

Last fall, the scientific community went into a minor frenzy. A hunk of interstellar material had been sucked into the ...

Although to us a millimeter is small, it is much larger than the nanometer wavelength of optical light and the micron-sized wavelengths of infrared light seen by other observatories like the James ...

SETI normally listens for extraterrestrial signals. A SETI team has switched roles and considered where aliens can hear us ...

Write our best anime of all time list,” they said. “You’re a massive weeb, so it’ll be easy!” They said. Well, while I can ...