Conventional images of the Earth and the moon place them close together, the moon hovering, seemingly, right over our planet's shoulder. Of course, this isn't accurate; we know just from looking at ...

Sean Raymond, an American astrophysicist living in France who studies the formation and evolution of planetary systems, posts a series called ``Building the Ultimate Solar System'' on his blog ...

Across the Milky Way and beyond, planetary systems appear to fall into a few recurring blueprints, and recent exoplanet ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

While the Voyager spacecraft are constantly traveling out of the Solar System, sometimes they are getting closer to Earth.

The Earth is our planet. It is one of eight planets that move around the sun, each in an oval shaped, elliptical orbit close elliptical orbitAn orbit that is the shape of an ellipse. An ellipse is ...

These strange objects could explain how water arrived on Earth, but may also be a previously unrecognised threat to our planet. Now, a spacecraft is headed towards one to investigate. They are some of ...

At the far edge of the Solar System, where the Sun’s influence thins into the dark between the stars, a pair of aging ...