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

The astronomers are ready to probe Neptune-sized exoplanets through ATREIDES, a new project designed to unravel how planetary systems form and transform.

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

Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

On Sept. 14, 1959, the Soviet probe Luna 2 -- known informally as Lunik 2 -- became the first Earth-launched space vehicle to ...

By the time Voyager’s primary mission ended with Voyager 2's 1989 Neptune encounter, earthlings had the 80486, the Gameboy ...

This giant protective bubble, created by the Sun’s solar wind, extends far beyond the orbit of Neptune and shields life in our solar system from harmful cosmic radiation and high-energy particles.

That may be about to change: NASA is preparing a brand new mission that will travel 1 million miles away from Earth in order to map the boundaries of the heliosphere, offering clues to scientists ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...

On September 5, 1977, the power situation was a good deal healthier when the mission got underway. Launched just over two weeks after Voyager 2, Voyager 1 was scheduled to make flybys of Jupiter and ...

Interstellar object 3I/ATLAS spacecraft close flyby SwRI mission has gained global attention. Scientists propose a mission to ...

SummaryNASA's new Interstellar Mapping and Acceleration Probe, or IMAP, will launch no earlier than Tuesday, Sept. 23 to ...