Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an ...

There's more than warm power supplies and wonky capacitors Opinion The Voyager space probes are dear to the hearts of every ...

NASA's Voyager 1 launched 48 years ago in September 1977 on a decades-spanning journey to study the cosmos and search for ...

In our solar system, there is a rare celestial alignment that occurs only once every 176 years, during which four giant ...

In this quiz, you'll test your knowledge of Neptune's features, moons, and the science that keeps astronomers fascinated.