Further simulations on flybys into the inner Solar System revealed one of our own planets might be flung out of the ballpark ...

What an amateur astronomer recently took to be a newly-discovered asteroid turned out to be a Tesla Roadster voyaging through the cosmos.

The probe sent a signal to Earth indicating that it had survived the closest solar encounter ever attempted ... No one was hurt by the object, believed to be part of a launch rocket.

Conduct more detailed simulations to refine the characteristics of the interstellar object and its encounter with the solar system. Search for observational evidence of such past encounters in the ...

Michigan State University and NASA researchers discover seven dark comets that reveal new solar system secrets.

A new study suggests that a planet-sized object may have passed through the solar system billions of years ago. Its journey could have permanently altered the orbits of the outer planets.

However, the disk of the Solar System is relatively warped, and the orbits of its planets are slightly tilted and elliptical. It is quite possible that some heavy object entered the protoplanetary mix ...

Comet ATLAS brightens as it nears the Sun, providing scientists with valuable data on solar wind interactions and offering a ...