An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

Eventually, in 2006, the IAU settled on a three-part definition: a planet orbits the ... there’s no scientific reason we can’t have thousands of planets in the solar system, but cultural ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the ... life Using computer models of the four ...

A new study suggests that a close encounter with a massive interstellar object, possibly eight times the mass of Jupiter, may have significantly altered the orbits of the four outer planets in our ...

Researchers have pioneered an innovative method using helioseismology to measure the solar radiative opacity under extreme ...

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

Europa Clipper - one of the most advanced spacecraft ever sent to another planet - aims to explore Jupiter's icy moon ...

All must, then, be regarded as having always been members of the solar system, however much their orbits may have changed ... of the viscosity with the time. Scientific Papers, vol.

By studying the Sun’s acoustic waves, scientists are uncovering its hidden dynamics, refining stellar models, and influencing ...

A planet that may support alien life has been discovered less than 20 light-years from Earth. The "promising" super-Earth - ...