A rare discovery beyond Neptune is forcing scientists to rethink early solar system dynamics and the forces that shaped ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

Scientists say studying objects like Ammonite, despite their immense distance, offers valuable insight into the solar ...

At the edge of our solar system, NASA’s Voyager 1 spacecraft has detected a stunning “wall of fire,” a boundary where interstellar space begins. This record 90,000°F barrier, uncovered by the Voyager ...

A pellet of plutonium 238, illuminated by the glow of its own radioactivity. NASA and other space agencies use this material in radioisotope power sources for interplanetary missions to the solar ...

In June 1983, newspaper headlines declared that NASA’s Pioneer 10 spacecraft had left the solar system, crossing beyond the orbit of Neptune. It was the common view of the time: All of the solar ...

Full Video- http://www.youtube.com/watch?v=WHNO079G1i8 Pluto, Eris, and the Dwarf Planets of the Outer Solar System Exploring Space Lecture webcast live on Tuesday ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

In 2015, a NASA spacecraft snapped spectacular photographs of Pluto, forever changing humanity’s view of that world. On Tuesday that same probe, New Horizons, will provide a closeup of the farthest ...