A group of astronomers from across the globe, including a team from the University of Washington and led by Queen's ...

Scientists hunting for Planet Nine, an elusive planetary body that could change our understanding of the solar system, have ...

Astronomers are racing to explain peculiar orbits of faraway objects at the edge of our solar system. Among the many mysteries that make the furthest reaches of our solar system, well, mysterious ...

This may explain the strange properties of the orbits of our solar system's planets, which are not quite perfectly circular, and all lie on slightly different planes. NASA artist’s conception of ...

A massive interstellar object passing through our solar system during its formative years likely altered the orbits of planets into trajectories observed today, a new study says. Interactions with ...

“By analyzing the reflectivity, and the orbits, we found that our solar system contains two different types of dark comets.” Inner dark comets can be found within the inner solar ...

but with densities closer to the gas giants in our own solar system. Pitts said most of the planets are smaller than Neptune. Their orbits range from nine to 54 days, putting them closer to their ...

Estimated to be billions of years old, the planetary formation 100 light-years away in the constellation Coma Berenices may help unravel some mysteries of our solar system. The new planets ...

For years, some astronomers have been suggesting that unusual behaviour on the edge of our solar system is best explained by another, undiscovered planet. That helps explain the orbits of objects ...

For the inner four planets in this solar system, each planet orbits the sun three times for every two orbits of the planet immediately to its outside. For the fourth, fifth and sixth planets ...